M E TA P H O R - B A S E D A D V E RT I S I N G R E S E A R C H
Seeing the Voice of the Customer:
Metaphor-Based Advertising Research
Gerald Zaltman
Robin Higie Coulter
Reprinted from the JOURNAL OF ADVERTISING RESEARCH, Vol. 35, No. 4, July/August 1995
Journal of ADVERTISING RESEARCH - JULY/AUGUST 1995
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Journal of ADVERTISING RESEARCH - JULY/AUGUST 1995
M E TA P H O R - B A S E D A D V E RT I S I N G R E S E A R C H
GERALD ZALTMAN
AND
ROBIN HIGIE COULTER
GERALD ZALTMAN
Joseph C. Wilson
Professor of Business
Administration
Harvard University
Seeing the VoiCe
of the CuStoMeR: MetAphoR-BASed
AdVeRtiSing ReSeARCh
Although improvements in traditional quantitative and qualitative
research techniques have enhanced our ability to collect timely,
valid, and reliable data, and to analyze these data with greater insights, advertising practitioners continue to search for and experiment with alternative methodologies. We offer seven basic premises for improving advertising research and copy development
and then introduce the Zaltman Metaphor Elicitation Technique,
ZMET. ZMET is designed to surface the mental models that drive
consumer thinking and behavior and characterize these models
in actionable ways using consumers, metaphors. We suggest that
ZMET is a promising means for improving advertising research.
I
ROBIN HIGIE COULTER
Associate Professor
of Marketing
University of Connecticut
mprovements in traditional
quantitative and qualitative
techniques have enhanced our
ability to collect timely, valid,
and reliable consumer data and
to analyze these data with greater
insight. Many of these improvements are rooted in advances in
the electronic capture of information, in new statistical procedures,
and in greater computational
capacity. However, despite these
advances, signiicant challenges
persist in understanding consumers, thoughts, feelings, and behaviors. In particular, market research
methods need to improve in ways
that:
1. Provide deeper understanding
about consumers as a basis for
advertising and other marketing-mix decisions.
2. Do a better job of eliciting
latent and emerging needs.
3. Provide better guidance for
capturing consumers, attenThe authors wish to acknowledge the
signiicant support provided by the
Division of Research of the Harvard
Business School.
tion and further engaging their
thought processes.
4. Help codify and organize nonverbal data better.
5. Facilitate the presentation of
indings by researchers in ways
that more closely resemble the
end products their clients must
develop, e.g., visual advertising.
These needed improvements
are nowhere more evident than
with the development of effective
advertising copy. This important
task requires copy developers and
the intended audience for advertising copy to share the same understanding about the ad message.
For an audience to process and
understand a message and then
contemplate purchase, the message
must capture rational and emotional meanings which comingle at
multiple levels of thought (Damasio, 1994). The message must also
resonate not only with surface
knowledge but also with deeper
meanings associated with the topic
of interest. Thus, developing effective copy requires research methods that open windows into the
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M E TA P H O R - B A S E D A D V E RT I S I N G R E S E A R C H
consumer’s mind and that access
relevant rational and emotional issues and their interplay. Although
many quantitative and qualitative
methods are useful in understanding how to communicate with
existing and potential customers,
advertising practitioners continue
to search for and experiment with
alternative methodologies.
Our purpose is to introduce the
Zaltman Metaphor Elicitation
Technique, ZMET, a patented
research tool designed to (1) surface the mental models that drive
consumer thinking and behavior,
and (2) characterize these models
in actionable ways using consumers, metaphors. ZMET uses consumers, visual and other sensory
images and employs qualitative
methods to elicit the metaphors,
constructs, and mental models that
drive consumers, thinking and
behavior. Quantitative analyses of
the data provide information for
advertising, promotions, and other
marketing-mix decisions. Before
we proceed with a fuller description of ZMET, we briely discuss
several challenges facing advertising researchers and then provide
seven basic premises for improving advertising research.
Challenges facing
Advertising Researchers
Consumers, lives are becoming
more complex. Their needs and
states of mind are changing more
frequently, they are faced with
more and more options concerning
products and services and delivery
systems, and nonpurchase-related
demands are vying for their attention. Thus, many consumers are
experiencing a time famine as they
attempt to deal with their needs,
sort out their purchase options, and
attend to multiple responsibilities.
One consequence of this time
famine is that it is increasingly
36
dificult for advertisers to capture
consumers, attention and information-processing time. Getting
consumers, attention increasingly
requires managers and advertisers to have deeper understanding
about consumers so that they have
a richer foundation for building
creative communication strategies and executions. Deep insights
are also a source of competitive
advantage (beyond their value in
stimulating creativity) because
they are usually less commonly
available to one’s competitors.
. . . important opportunities
to learn from consumers are
missed by ignoring
nonverbal channels of
communication as part of
the research process.
While technological advances
have made traditional research
techniques more useful, consumers, voices are still constrained, for
example, by the issues and questions framed by survey designers
and focus-group moderators and
by the manner in which consumers are allowed to respond. Additionally, the framework in survey
research and in most qualitative
techniques is verbo-centric, i.e., it
is primarily, if not exclusively, oriented around words, particularly
in their narrow, literal sense. This
imposes another important constraint--incomplete communication
from consumers--since most human communication is nonverbal.
Thus, important opportunities to
learn from consumers are missed
by ignoring nonverbal channels of
communication as part of the research process. Heavy reliance on
verbo-centric techniques narrows
Journal of ADVERTISING RESEARCH - JULY/AUGUST 1995
the cognitive peripheral vision of
both researchers and their clients.
Traditional qualitative techniques still pose problems when
codifying and quantifying how
consumers think about a irm’s
offerings and how marketing
communications affect consumer
responses. A manifestation of this
problem occurs in communications between researchers and their
clients such as advertising creative
staffs and product designers. The
language of traditional research is
almost exclusively verbal (including quantitative symbols).
Creative staffs, on the other hand,
must generally communicate with
consumers using nonverbal and
especially visual cues. Thus there
is often a mismatch between the
verbocentric data collection and
reporting language researchers
commonly use and the nonverbal,
multisensory languages advertisers
and others must use to communicate effectively with consumers.
Hence, there is a need for a
method that elicits consumer information via multisensory channels. This method would have the
advantage of increasing researchers, understanding of consumers,
thoughts, feelings, and behaviors
as related to their products and
services. Additionally, researchers
would be able to better communicate with their clients who, in
turn, could produce more creative
advertising and promotional materials to tap consumers, mental
models.
Seven Basic premises
for improving
Advertising Research
and Copy development
Before presenting ZMET as a
response to these challenges it is
useful to review several premises
with strong support in the social
and biological sciences and in the
M E TA P H O R - B A S E D A D V E RT I S I N G R E S E A R C H
humanities. These interrelated
premises are underutilized bases
for improving our capacity to
understand the voice of the consumer. Research methods rooted
in these premises are more likely
to elicit valid and usable market
information, especially for communication purposes.
Most Communication is
nonverbal. The irst premise is
that most human communication
is nonverbal (Burgoon et al., 1989;
Knapp, 1980; Seiter, 1988; Weiser,
1988; Mehrabian, 1971; Birdwhistell, 1970). One of the classic
works on nonverbal communication is Edward T. Hall’s The Silent
Language which identiies 10
primary message systems involved
in human communication. Only
one system--interaction--and then
only part of that system involves
verbal language. All other systems
involve nonlinguistic forms of
communication (Hall, 1959).
Although no formal research
provides direct documentation, the
rule of thumb among communications specialists is that about 80
percent of all human communication is nonverbal. Much of the
meaning of verbal language also
is determined by nonverbal cues
(Poyatos, 1993). Moreover, when
there is an apparent contradiction,
nonverbal cues tend to be believed
over verbal ones (Knapp, 1980).
The growing understanding
of the role of all basic senses in
learning and communication processes reinforces the assumption
that nonverbal communication is
dominant (Montagu, 1986; Stoller,
1989; Howes, 1991). An important
part of this understanding is the
growing knowledge of the role
of interactions (called synesthesia) among sensory modalities in
our “making sense” of our world
(Marks, 1978; Classen, 1993). It
is also of signiicance that verbal
language developed only recently
in the context of human evolution
and written language developed
even more recently. Thus, the human brain did not evolve to favor
verbal functions, especially not
written communication functions.
Rather, emphasis was placed on
the elaborate production of nonverbal channels of communication.
(For an interesting perspective on
this see Fincher, 1976; Glucksberg, 1988; and Synnott, 1991.)
This is not surprising since most
stimuli reaching the brain are
nonverbal and most mental images
people use in daily life are visual
(Kosslyn et al., 1990).
It is important to add that nonverbal communication includes
paralanguage, or the tone, pitch,
and other speech qualities that determine whether we literally mean
what we say (generally not) or just
the opposite or even something
else (Gibbs, 1994). Paralanguage
can in fact be very subtle with major differences in meaning being
conveyed quite effectively by different subtleties (Poyatos, 1993).
Literal verbal language is certainly
important and the task facing
market researchers is how to deal
with both verbal and nonverbal
language more effectively.
thoughts occur as images.
Thoughts typically occur as nonverbal images even though they
are often expressed verbally. Thus
the way in which thoughts occur
may be very different from the
way in which they are communicated. Consider the following two
insights. The irst is provided by
neurobiologist Antonio R. Damasio (1994):
[Brains] still have no mind, if
they do not meet an essential
condition: the ability to display images internally and to
order those images in a process
called thought. The images are
not solely visual; there are also
sound images, olfactory images,
and so on.
The second insight comes from
Steven Pinker (1994), director of
the Center for Cognitive Neuroscience at MIT. He notes that contrary to popular wisdom, thoughts
are merely couched in words when
it becomes necessary to convey
them to others:
Is thought dependent on words?
. . . The idea that thought is the
same thing as language is an
example of what can be called a
conventional absurdity . . . there
is no scientiic evidence that languages dramatically shape their
speakers, way of thinking.
Thus a second premise is that
thoughts are images, and only
infrequently verbal images. Consequently, it is important to enable consumers to represent their
images in nonverbal terms, thus
bringing researchers “closer” to
the state in which thoughts occur
and thus able to learn more about
them. Although verbal language
is an indispensable part of this
process, it is linked directly with
speciic nonverbal images. The
combination of verbal language
and nonverbal images (in contrast
to verbal language only or even
primarily) helps consumers convey
to researchers deeper and more
varied internal representations or
meanings.
Metaphors as essential
units of thought. The third
premise is that metaphors are the
key windows/mechanisms for
viewing consumer thought and
feelings and for understanding
behavior. “The essence of a metaphor,” according to Lakoff and
Johnson, “is understanding and
experiencing one kind of thing in
terms of another” (1980). For the
most part, it is only through their
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metaphors that we can understand
consumer thinking and behavior
and thus learn how to develop
and market goods and services
successfully. Even behavior and
thoughts are themselves metaphors
for one another. In fact, there is
an emerging consensus that metaphors are the essential units of
thought and of communication
(Ortony, 1993).
Metaphors are not only ways of
hiding and expressing thoughts,
they actively create and shape
thought. We cannot know anything
unless it is perceived as an instance of one thing and not another
(Lakoff, 1987). Thought is more
inherently igurative than it is literal (Gibbs, 1994). Consequently, by
paying more attention to the visual
and other sensory metaphors customers use to express their images,
researchers can learn more about
their thoughts and feelings.
Sensory images as Metaphors. A fourth premise is that
our senses provide important
metaphors. The senses are “. . . the
gates and windows to the mind,
through which all new information passes; so that there can be no
thoughts, ideas, conceptions in our
head that do not derive originally
from our experience of surface
stimuli impinging on our bodies”
(Humphrey, 1992). Accordingly,
sensory-based metaphors are potentially important devices for understanding consumers, thoughts
and behavior. Current thinking
in several ields that cognition is
grounded in embodied experience
supports the salience of sensory
images as metaphors (Johnson,
1987; Gibbs, 1994; Damasio,
1994; McAdams and Bigand,
1993; Varela et al., 1991).
Many metaphors are mental
images and, as discussed, the
majority of these images are visual
(Arnheim, 1969; Kosslyn et al.,
1990). One means by which indi-
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Often, important stories
are latent or hidden and
surfacing them is a special
challenge for researchers.
viduals can communicate their visual metaphors is via pictures, for
example, photographs, pictures in
magazines, drawings, or artwork.
Pictures typically represent basic
concepts and therefore are useful
tools for understanding consumers,
thoughts, feelings, and behaviors.
Pictures, then, can serve as entry
points for exploring other consumer concepts and represent a natural
and eficient way for consumers
to convey higher order constructs
(Weiser, 1988; Ball and Smith,
1992). Some clinical psychologists use a client’s photographs as
a central part of the therapeutic
counseling process (Entin, 1981;
Krauss and Fryrear, 1983; Weiser,
1988), and art therapy has a long
tradition as a clinical tool. Thus, as
researchers, it appears that accessing visual as well as other sensory
(e.g., tactile, auditory) images
would provide useful insights into
consumers, thoughts, feelings, and
behaviors.
Mental Models as Representations of Stories. A ifth
premise is that consumers have
mental models which represent
their knowledge and behavior. An
integral part of this premise is that
“. . . the major processes of memory are the creation, storage, and retrieval of stories” (Schank, 1990).
Stories, of course, are metaphors
for knowledge. They provide the
relationships between constructs
and as such can be captured by
researchers and displayed as diagrams. These diagrams represent
Journal of ADVERTISING RESEARCH - JULY/AUGUST 1995
mental models which are the interrelated ideas (concepts or constructs) held by an individual or
group about a market experience.
Often, important stories are latent
or hidden and surfacing them is a
special challenge for researchers.
A mental model of consumer
thinking contains the dominant
constructs (factors, variables)
that drive consumer thought and
action. However, knowing only
the constructs is like knowing
what cities one would like to visit
without having an itinerary and
road map for going from one to
the other. The connections among
constructs represent the reasoning
processes whereby one construct
affects another. These reasoning
processes are the most fundamental and important units we
can have for segmenting markets.
Moreover, knowing how constructs interact via various reasoning mechanisms allows us to know
which constructs might be the best
vehicles for inluencing others and
which constructs might be affected
unintentionally by efforts to inluence other constructs.
A challenge for managers is to
animate to bring to life appropriate
stories or mental models among
consumers. Since stories are metaphors for knowledge and often
describe one’s reasoning process,
speciic metaphors are important
sources of insight about consumers. Speciic metaphors are also
laden with symbols and imagery
that might be used creatively
in implementing decisions that
will animate or bring appropriate
reasoning processes and mental
models to life. It is important,
therefore, to have a research tool
that identiies or elicits the imagery consumers use to tell their
stories.
deep Structures of thought
Can Be Accessed. All consumers have relevant conscious
M E TA P H O R - B A S E D A D V E RT I S I N G R E S E A R C H
thoughts that they need special
help in articulating. Additionally, all consumers have relevant
hidden thoughts: ideas they are
not aware of possessing but are
willing to share once discovered.
A sixth premise is that these
hidden or deep structures can be
accessed. A variety of techniques
such as those used in art therapy,
and especially phototherapy, can
be very effective in surfacing such
thoughts (Weiser, 1993; Ziller,
1990).
What a person notices [in a
picture! will always mirror
the inner map that she or he is
unconsciously using to organize
and understand what the senses
are perceiving (Weiser, 1993).
the Comingling of Reason
and emotion. A seventh premise is that it is both more accurate
(from a neurological standpoint)
and more productive (from a copy
development standpoint) to consider emotion and reason as forces
which comingle. Hence as deep
thought structures are surfaced, we
must consider reason and emotion
together rather than stressing one
over the other. Consequently we
need techniques that elicit both,
particularly when they are linked
to one another (de Sousa, 1987;
Varela et al., 1991).
of sensation: “. . . thinking takes
place in the realm of the senses”
(Arnheim, 1969). An unconscious cognitive process maps the
physiology of sensory perception
onto abstract thinking. Abstract
thought, then, is necessarily an
extension of sensory experience.
Figure 1 presents, in a necessarily approximate “as if” way,
the connection between sensory
perception and concepts. Sensory
perceptions are transformed into
images which, in turn, are translated into metaphors which describe
these images. The metaphors are
then mapped onto abstract thought
and/or speciic concepts. This is
a process known as bottom-up
processing in which information
lows from small perceptual pieces
to larger ones (Goldman, 1986).
Abstract thoughts are stored in
memory and are connected to
speciic concepts as we engage
in thinking. There is also a topdown processing of information.
In this case, existing concepts
and abstract thought stored in
memory inluence our images and
metaphors (image schema) which,
in turn, inluence what sensory
stimuli we perceive and how we
do so. Thus higher level perceptions inluence the interpretation
of lower level, sensory perceptions
(Goldman, 1986).
Because metaphors reveal our
thoughts, and shape them as well
(Black, 1993), metaphorizing may
even be the central or most elemental creative force of the imagination and hence can be a source
of ideas. Since human thought
appears to be metaphorbased
(Danesi, 1990; Ortony, 1993), it is
not surprising that mental models
are best elicited and understood
through metaphors, especially
visual metaphors. Importantly,
figure 1
Mapping of Sensory perceptions onto Abstract thought
framework for
understanding Sensory
perception and thinking
These premises and still other
research suggest that abstract
thought is grounded in the senses
(Arnheim, 1969; Danesi, 1990;
Classen, 1993; Humphrey, 1992).
In fact, the world of thought is
modeled in terms of the world
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. . . metaphors are especially
important for eliciting a
mental model shared by a
market segment or group.
metaphors are acquired through
a socialization process so that,
at some level, their meaning is
shared within a culture or community. Thus, metaphors are especially important for eliciting a mental
model shared by a market segment
or group.
Based upon these premises and
framework, we suggest that there
is need for a research tool that:
Taps nonverbal channels of
communication in a manner that
produces rich, deep, and representative insights about consumers.
Makes use of metaphors which
are fundamental to learning and
communication.
Generates core constructs and
the reasonings that connect
them to form the mental models
driving consumer thought and
action.
Provides information in a way
which is highly useful to copy
developers, creative staffs, product-design teams, strategic planning groups, and other ultimate
users of market research.
All of this, of course, has to be
done while meeting appropriate
standards of validity, reliability,
timeliness, and cost effectiveness.
the Zaltman Metaphor
elicitation technique
ZMET is useful in understanding consumers, images of brands,
40
products, and companies, brand
equity, product concepts and designs, product usage and purchase
experiences, life experiences,
consumption context, and attitudes
toward business. Clearly, these issues are important for the development of strategic communications
agendas and for the development
and implementation of advertising
copy and executional elements.
In the following sections we
describe ZMET, use an interview
from a study on intimate apparel
to illustrate various ZMET steps,
and then use data generated in
the study to demonstrate how the
indings might be used to develop
ad copy and executional elements.
Further, we provide a discussion
of reliability and validity issues as
they relate to ZMET.
implementing the technique. Typically 20 individuals are recruited to participate
in a project. After qualifying for
participation (based on screeners),
participants are given a set of instructions and guidelines about the
research topic, e.g., a brand name,
a corporate identity, a service
concept, product use, or product
design. They are instructed to
take photographs and/or collect
pictures (from magazines, books,
newspapers, or other sources) that
indicate what the topic means
to them. A personal interview is
scheduled approximately seven to
ten days hence. Participants typically engage in ive to six hours of
preparation for the interview. Our
experiences indicate that study
participants, regardless of such
demographic characteristics as
formal education, age, or occupational experience, successfully
engage in each step of the process
even those (e.g., sensory images
and the summary image) that a
priori may seem dificult because
the tasks are unfamiliar.
the guided Conversation.
Journal of ADVERTISING RESEARCH - JULY/AUGUST 1995
The personal interview involves
a guided conversation which we
believe can yield more valid, more
reliable, and, importantly, more
relevant insights than traditional
structured interview approaches
(Holstein and Gubrium, 1995;
McCracken, 1988; Mishler, 1986).
Because ZMET has consumers
collect their own pictures, the consumers (not the researchers) are in
control of the stimuli used in the
guided conversation.
The guided conversation is a
personal, one-on-one interview
that takes approximately two
hours, and it is audiotaped. The
two-hour time frame and the
interview format afford an opportunity for a properly trained
interviewer to learn not only about
people’s initial thoughts (much as
might be obtained by a structured
questionnaire or focus group) but
also about the deeper meaning
of a topic. The guided conversation includes a variety of steps,
only a subset of which are used
in any particular project. Inclusion of steps in any particular
project and the manner in which
they are implemented are based on
the nature of the problem and the
intended use of the data. We use an
interview with Elizabeth, a participant in a study about intimate
apparel, to illustrate 10 ZMET
steps. A variety of probes based
on art therapy theory and practice,
although not used in this example,
also have proven to be extremely
useful in many projects.
Step 1, Storytelling, provides
participants with an opportunity
to tell their stories. Because human memory and communication
is story-based (Schank, 1990)
and participants have been thinking about the topic for a week to
10 days, it is not surprising that
participants come to the interview with a particular agenda or
story they want to tell. Elizabeth
M E TA P H O R - B A S E D A D V E RT I S I N G R E S E A R C H
brought in 13 images and described how each of her pictures
related to this type of intimate
apparel. For example, one of
Elizabeth’s photographs was of
a microwave oven with a telephone (its cord very twisted) on
it. Elizabeth said that this picture
served to illustrate the twisted, hot,
uncomfortable feeling of wearing
this particular article of intimate
apparel.
In Step 2, Missed Issues and
Images, the interviewer asks the
participant to describe any issues
for which she or he was unable
to ind a picture and to describe a
picture that would represent the
issue. This is an important step
because it allows the participant
to address issues that might have
come to mind either after gathering the pictures or during the interview process. Elizabeth indicated
that she would have liked to take
a photograph of a “nice painting
with a scratch on it, or a glass with
a crack” to represent a tear in the
article of intimate apparel.
In Step 3, Sorting Task, the participant is asked to sort his or her
pictures into meaningful piles and
to provide a label or description
for each pile. There are no restrictions on the number of piles or the
number of pictures in each pile.
The sorting task is useful because
it helps to establish the major
themes or constructs relevant to
the participant. Elizabeth sorted
her images into ive groups relecting both positive and negative
feelings: (1) elegant, (2) conforming, (3) constricted, (4) tortured,
and (5) twisted up.
Step 4, Construct Elicitation,
employs a modiied version of
the Kelly Repertory Grid technique and the laddering technique
(Kelly, 1963; Shaw and McKnight,
1980; Gutman, 1982; Lewis and
Klein, 1985; Reynolds and Whitlark, 1995; Reynolds and Gutman,
1988; Valette-Florence and Rapacchi, 1991). The Kelly Repertory
Grid Technique is an effective
method of eliciting constructs
which underlie thinking and action. The interviewer uses the
Kelly Grid technique (identifying
how any two of three stimuli are
similar but different from the third
stimulus) to elicit constructs from
participants. In other words, the
Kelly Grid technique surfaces the
variables that participants use to
make sense about, or literally “sort
out,” the meaning of a product
category, a speciic brand, or other
consumption-related situation.
The laddering procedure is especially useful for eliciting causal
patterns among the constructs
identiied by the Kelly Grid technique. Laddering, a set of thought
probes, tends to surface variables
in a means-end chain consisting
of attributes, consequences, and
values, thereby providing a set
of causally connected constructs.
Using both techniques together
is an effective mechanism for
getting consumers to articulate
the constructs and the relationships among constructs (Reynolds
and Gutman, 1988). Moreover,
the techniques complement one
another: the Kelly Grid increases
the likelihood of surfacing relevant constructs, and the laddering
technique increases the likelihood
that associated ideas and relevant
connections among constructs are
being understood.
To illustrate we provide one
of Elizabeth’s triads. During the
Kelly Grid, Elizabeth randomly
selected three pictures, shown in
Exhibit 1. She indicated that the
two pictures on the left (trees with
bands around the trunks and fencing tightly wrapped in cellophane)
represented physical discomfort
and the other picture (lowers in
a nice vase) represented beauty.
The laddering process then was
To understand what
something is, it is also
necessary to know
what it is not.
used to obtain an understanding of
the deeper meanings of physical
discomfort and beauty as related
to Elizabeth’s wearing of this
garment. Elizabeth reported that
some components of the garment
made her physically uncomfortable which in turn made her feel
imprisoned. In addition, she noted
that the vase represented tallness
and thinness and that the lowers
represented beauty; both of these
factors related to the elegance that
she could feel when wearing this
garment.
In Step 5, Most Representative
Image, Elizabeth indicated that
the picture that most represented
her feelings was her picture of two
African masks that had necklaces
around their elongated necks,
shown in Exhibit 2. She reported
that the masks expressed both the
positive (elegance) and negative
(constrained) feelings that she had
about wearing this article of clothing.
In Step 6, Opposite Image, the
interviewer asks the participant
about pictures that might describe
the opposite of the task they were
given. To understand what something is, it is also necessary to
know what it is not. Indeed, there
is convincing argument that any
concept or construct contains the
footprint or trace of its opposite
meaning (Brunette and Wills,
1989). When the interviewer asked
Elizabeth what images conveyed
the opposite of her image of intimate apparel, she responded with
a lock of birds soaring around the
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41
M E TA P H O R - B A S E D A D V E RT I S I N G R E S E A R C H
exhibit 1
“intimate Aparel” triad for elizabeth
(the Kelly Repertory grid technique
skies (representing freedom to do
as they pleased).
In Step 7, Sensory Images, the
participant is asked to use other
senses to convey what does and
does not represent the concept
being explored. People think
by means of all their senses,
and sensory thoughts are images (MacDougall, 1992; Howes,
1991; Bone and Jantrania, 1992;
Danesi, 1990; Classen, 1993);
thus, we believe that such images are important to capture and
analyze. Each individual tells what
is and is not the taste, touch, smell,
color, sound and emotional feeling related to the concept being
explored. Elizabeth’s nonvisual
sensory images of this article of
exhibit 2
elizabeth’s Most
Representative image
(African Masks)
42
intimate apparel included: the taste
of medicine, but not dessert; the
feel of sandpaper and silk, but not
of cream; the sound of static, but
not that of a waterfall; the smell of
sulfur, but not of roses; the color
brown, but not red; the feeling of
anxiety, but not of peacefulness.
The meaning of each image is
explored with each participant to
surface relevant constructs.
In Step 8, The Mental Map,
the interviewer reviews all of the
constructs discussed and asks the
participant if the constructs are accurate representations of what was
meant and if any important ideas
are missing. Then the participant
creates a map to illustrate the connections among important constructs as they relate to the topic.
An abridged (for presentation
purposes) version of Elizabeth’s
mental map is illustrated in Figure
2.
In Step 9, The Summary Image,
the participant creates a summary
image or montage using his or her
own images (sometimes augmented by images from an image bank)
to express his or her important
issues. Digital imaging techniques
facilitate the creation of the digital
image.
To begin the process, a graphics
technician scans into the computer
the pictures that the participant
Journal of ADVERTISING RESEARCH - JULY/AUGUST 1995
wants to include in the summary
image and then on the participant’s
direction creates the digital image.
The digital image management
process contains many special
effects options and enables the
participant to rearrange or alter the
subject, foreground, background,
or speciic elements including color, object sizes, shapes, positions,
and even textures appearing within
pictures to be more expressive
of the concept. The use of digital
imaging is intended to stimulate
or at least help to express thinking
rather than to develop an aesthetically pleasing image or an image
that is creative for its own sake.
Elizabeth’s digital image, Exhibit 3, consisted of components
of ive of her pictures and visually
depicted her story about intimate
apparel, which she described as
follows:
The background is a lowing
chocolate colored dress that
illustrates freer movement,
smooth, silky, and beautiful.
The gash through the dress
represents a run or a tear and
the frustration, wasted money,
embarrassment, and apprehension associated with that.
The cookie cutter in the center
illustrates conformity wearing what everyone has to wear,
no freedom of choice, women
having to be a certain way. The
mask in the cookie cutter’s head
illustrates two diverse feelings
when wearing the article of intimate apparel-irst, the elongated
neck indicates a sense of feeling
taller, thinner, and elegant; in
the second, the necklaces represent feelings of physical discomfort and being constricted.
The tangled garden hose in the
cookie cutter’s mid-section rep-
M E TA P H O R - B A S E D A D V E RT I S I N G R E S E A R C H
figure 2
Mental Map of intimate Care
resents the anxieties associated
with wearing the item. Finally,
St. Catherine’s wheel around
the cookie cutter represents the
torture and physical discomfort
of wearing the item.
People think differently when
they think “in motion” than
when they think in still images
or pictures. In Step 10, The
Vignette, the participant is asked
to create a vignette or short
video that helps to communicate
important issues related to the
topic under consideration. Elizabeth’s vignette about wearing
this article of intimate apparel
expressed her more positive
feelings:
It’s a rainy spring day, and I’m
feeling a little sad. Some new
age music is playing on the
stereo. The telephone rings,
and a friend who I hadn’t seen
in months is on the line. My
mood changes at the sound
of his voice. He asks me out
to dinner and says he’ll come
to get me in an hour. I look
in my drawers for my most
elegant intimate apparel and
then into my closet for a sexy
dress. I put them on and feel
beautiful. As I put on my per-
fume, the doorbell rings and
he arrives with champagne
and roses.
identification of Key
themes. Once all of the
interviews are completed, the
research team reviews each
interview transcript to identify
key themes or constructs. The
identification of themes or constructs (i.e., summary categories
or overarching ideas capable
of a range of different values and
dimensions) is an onerous task.
However, several streams of research, particularly categorization
theory (Rosch, 1978) and theories
of emotion (Izard, 1977; Plutchik,
1980), have provided guidance in
Journal of ADVERTISING RESEARCH - JULY/AUGUST 1995
43
M E TA P H O R - B A S E D A D V E RT I S I N G R E S E A R C H
exhibit 3
elizabeth’s digital image of intimate Apparel
understanding the important issues
related to categorizing tangibles
and feelings, respectively. Based
on this theoretical grounding,
social scientists involved with
qualitative data have established
guidelines for developing classiication schemes and coding of
data (Glasser and Strauss, 1967;
Lincoln and Guba, 1985; Miles
and Huberman, 1984; Strauss and
Corbin, 1990). Recently, Spiggle
(1994) elaborated on issues related to analyzing qualitative data,
speciically focusing on categorization, abstraction of categories,
comparison of instances within the
data, and dimensionalization of
the data. This area of research has
been particularly valuable in the
analysis of ZMET data.
All ZMET constructs are bipolar, for example, satisfaction
encompasses both “very satisied”
as well as “very dissatisied” and
the range of responses between
those two “endpoints.” The list of
44
key themes or constructs derived
from the examination of interview
transcripts serves as the starting
point for coding participants, responses. The construct list may be
supplemented during the course of
coding should previously unidentiied constructs be found (Spiggle,
1994).
The number of constructs generated varies from project to project,
and from participant to participant, depending on the level of
the participants, involvement with
the topic of interest. For example,
regarding Project 20, usage experiences with new technologies, 50
constructs were mentioned by a
least 5 of the 21 participants (see
Table 1). The number of constructs
mentioned by any one participant ranged from 21 to 43; the
average was 33. Also with regard
to Project 20, the 26 constructs
included in the consensus map
were mentioned by at least 11 of
the 21 participants. In contrast,
Journal of ADVERTISING RESEARCH - JULY/AUGUST 1995
Project 15, a brand equity study
for a snack food, was less involving. Twenty-seven constructs were
mentioned by at least two of the
ten participants, and the number of
constructs mentioned by any one
participant ranged from twelve to
twenty-four; the average was seventeen. Also, with regard to Project 15, the 18 constructs included
in the map were mentioned by at
least ive of the ten participants.
Coding the Data. Once the list
of key themes has been developed,
data are coded in terms of pairedconstruct relationships. A construct
pair is the causal relationship between two constructs. For example, the construct pair “being attractive/unattractive to others” and
“having/lacking selfconidence”
suggests that one’s perceived level
of attractiveness to others affects
one’s self-conidence. Typically,
construct pairs are elicited from
the Storytelling, Missed Issues and
Images, and Construct Elicitation
steps.
Constructing the Consensus Map. In an attempt to understand the “three mosts,” i.e., most
of the thinking of most people
most of the time, we analyze the
occurrence of the construct pairs
across participants (Noblit and
Hare, 1988), and these data are
used to create the consensus map.
Speciically, two criteria are used
for including constructs and construct pairs in the consensus map-the number of participants who
mention a construct or theme and
the number of participants who
mention a relationship between
two constructs. These criteria
consistently are used to derive the
consensus map in a ZMET project.
The actual number of mentions
necessary for either a construct or
a construct pair to be included on a
consensus map varies per project,
depending upon the number of
participants involved and the na-
M E TA P H O R - B A S E D A D V E RT I S I N G R E S E A R C H
table 1
number of participants in 20 Most Recent projects Required
to generate 80 percent or More of the Consensus Mapa
ture of the project (i.e., the extent
to which consumers have narrow
or broad-based understandings of
and feelings about the research
topic). Table 1 (column 4) indicates that the number of constructs
retained in the consensus map for
the 20 projects ranged from 18
(Projects 16 and 19) to 59 (Project
5). Typically, for a construct to be
included on the consensus map, it
must have been mentioned by at
least one-third third of the participants and a construct pair must
have been mentioned by at least
one-quarter of the participants. As
a consequence, the consensus map,
on average, captures 80 percent of
the constructs mentioned by each
participant.
The consensus map generated
from these data is a diagram showing the linkages among the elicited
constructs. Direct and indirect
connections between constructs
(or themes) represent a reasoning
chain or thinking process showing how one idea leads to another.
These associations are important
because addressing one construct
will have a ripple or multiplier
effect on those with which it is
causally connected.
A somewhat abridged example
of a consensus map involving the
experience of wearing an item
of intimate apparel is shown in
Exhibit 5. Each construct is bipolar, that is, “physical comfort”
signiies both physical comfort
and discomfort. The consensus
map shown is based on 25 participants, and illustrates the construct
pair relationships mentioned by
at least 5 participants. The arrows
on the consensus map represent
links between constructs. Some
constructs are originating points
(shown as circles on the map) in
a reasoning process and lead to
other constructs, and other constructs are destination or ending
points (shown as rectangles on
Journal of ADVERTISING RESEARCH - JULY/AUGUST 1995
45
M E TA P H O R - B A S E D A D V E RT I S I N G R E S E A R C H
table 1
number of participants in 20 Most Recent projects Required to generate 80 percent or More of
the Consensus Mapa
the map) in a reasoning process.
Connector constructs (shown
as diamond shapes on the map)
serve as transmitters or linkages
between originator, destination,
and other connector constructs.
Because originator and connector
constructs trigger other constructs,
care should be taken to address
these issues in communication
strategies.
The intimate apparel consensus map (Figure 3) illustrates
the relationships among relevant
constructs that have particular
relevance for the development of
ad copy for “variety of product
designs” and “garment quality.”
Comments made by participants
in the study help to provide an
46
understanding of how these two
constructs affect projection of self
image, elegance, happiness, sexiness, having a coordinated look,
being perceived as attractive to
others, and self-conidence:
“. . . special details . . . are fun-they add to the total outit and
help me to express myself. “
“. . . when you’re all dressed up
you feel like a queen--elegant,
royal, expensive in [garment]
with a nice sheen, soft, sheer,
and maybe a design.”
“. . . when you’re dressed up,
[garment] makes you feel conident.”
“. . . fancy lingerie is sexy,
pretty, nice, racy--romantic in-
Journal of ADVERTISING RESEARCH - JULY/AUGUST 1995
terlude--want to feel pretty.”
Thus, although the consensus
map clearly indicates negatives associated with this garment, in particular physical discomfort and its
consequences, there are numerous
themes that serve as the starting
point for developing meaningful
advertising copy and executional
elements.
observations about the
Consensus Maps. After the
data are processed to develop the
consensus map, participant iles
are selected at random and the
number of constructs mentioned
by each successive ile but not
mentioned by the previous ile(s)
is noted. That is, we answer the
M E TA P H O R - B A S E D A D V E RT I S I N G R E S E A R C H
question, “How many new constructs are added by each randomly selected ile?” Table 1 contains
information about consensus maps
from 20 recent applications (some
applications did not call for consensus maps). The data in Table 1
(columns 5, 6, and 7, respectively)
indicate the number of randomly
selected participant iles needed to
account for 80 percent, 90 percent,
and 100 percent of the constructs
identiied on the consensus maps.
For example, as related to Project
3, at least 80 percent of the constructs in that project’s consensus
map were captured after the fourth
participant (randomly selected);
at least 90 percent of the constructs were captured after the ifth
participant and 100 percent were
captured by the eighth participant.
On average, it took six participant
iles to account for 100 percent
of the constructs identiied on the
consensus maps. In essence, every
interview selected at random after
the sixth (on average) serves as
validation for the elicited constructs. Thus, there is a high level
of consensus among participants in
each of the projects.
illustrating important Constructs and Construct Relationships. The important constructs and construct relationships
are illustrated in a variety of ways.
For example, visual and other
sensory dictionaries, as well as
digital images and vignettes, help
to communicate the metaphors
participants associate with the key
constructs. The visual dictionary includes pictorial images that
represent constructs and reasoning
chains that are important to participants. Thus, for example, the
picture of the trees with the bands
around the trunks and the picture
of the fencing tightly wrapped in
cellophane (Exhibit 1) might illustrate “physical discomfort” and its
consequences--”anger,” “concern,”
“physical imprisonment,” and
“emotional discomfort”--in the
visual dictionary for the study on
intimate apparel. Additionally, the
sensory dictionary includes nonvisual sensory images (e.g., taste,
touch, and smell) that participants
have used to describe a key construct or theme and sensory images that participants have indicated
do not describe the key construct
or theme. Finally, the digital images and vignettes provide the
participants’ own summary representations of important themes and
construct relationships.
These data are presented in a
number of forms depending on
client interests and needs. For
example, the visual, sensory, and
digital images along with vignettes
are presented in an interactive CD.
This data coniguration enables
the user to “click” on a construct
presented on a screen and see a
sample of visual and other sensory
metaphors that represent how consumers understand and/or experience that construct. The images
are coupled with the participant’s
vocal description of the relevance
of the pictures, tactile sensations,
and so forth. Additionally, this data
form allows the user to click on a
line connecting two constructs and
see images representing especially
important reasoning or thinking
processes linking them. Digital
images created by participants
along with their audio description
of their summary pictures also can
be accessed. Illustrating these data
on video, in addition to or in lieu
of the interactive CD, is an option.
evaluating ZMet
The task of evaluating a new
technique is as important as it is
demanding. The appropriate evaluative criteria for any technique
vary with the technique’s inher-
ent characteristics, the particular
problem being addressed, and
the purpose of the research. For
instance, different criteria may be
appropriate and/or be given more
or less weight when a tool is being
used for exploratory rather than
conirmatory purposes. Even the
basic concepts of validity and reliability are deined or operationalized differently, depending on the
aim of the research, assumptions
about the nature of facts, and the
researchers’ goals (Lauder, 1984).
Indeed, many have cautioned that
we use appropriate criteria (not
criteria established for, for example, survey research) to assess
qualitative research (Holstein and
Gubrium, 1995; Wallendorf and
Belk, 1989).
ZMET is a hybrid methodology
grounded in a broad body of literature which lends support to the
technique’s validity and reliability.
For example, the use of photography as a research tool (Worth and
Adair, 1972) has a 50-year history
that crosses many disciplines, and
the validity and reliability of photography as a general research tool
has been discussed extensively by
Denzin (1989). Additionally, the
in-depth personal conversation
has signiicant merit in its own
right (Mishler, 1986; McCracken,
1988), and other research conducted by Grifin and Hauser (1992),
Silver and Thompson (1991),
Robinson (1991), and Fern (1982)
suggests that personal interviews
are more eficacious than focus
groups. Further, the validity and
reliability of the Kelly Repertory
Grid and laddering technique as
means for eliciting constructs are
also well-established (Kelly, 1963;
Gutman, 1982; Reynolds and Gutman, 1988; Shaw and McKnight,
1980).
It is also important to note that
the ZMET research team plays an
important role in providing valid
Journal of ADVERTISING RESEARCH - JULY/AUGUST 1995
47
M E TA P H O R - B A S E D A D V E RT I S I N G R E S E A R C H
and reliable data. In particular, the
staff develops a purposive sampling plan and exchanges insights
with interviewers both during and
after data collection. Throughout
the procedure, we employ steps
to establish credible qualitative
research based on the guidelines
set forth by Wallendorf and Belk
(1989), Webb et al. (1981), Miles
and Huberman (1984), Lincoln
and Guba (1985), Kirk and Miller
(1986), and Strauss and Corbin
(1990). Speciically, we: (1) engage participants in a personal, indepth conversation that averages
two hours in length, (2) triangulate
across methods as evident by the
multiple steps used in the ZMET
interviews, (3) regularly interact
with interviewers to discuss the
interview structure, constructs
elicited, etc., (4) triangulate across
researchers, reviewing the interview transcripts and audiotapes
of the participants, and (5) have
participants verify the constructs
elicited, and those not elicited,
during the interview.
To date, our research has involved over 1,400 consumers.
During the course of our research,
clients have shared proprietary
data previously collected on their
respective topics using standard
quantitative and qualitative tools.
These clients have indicated that
ZMET has provided results consistent with the results other methods
produced, but also added value by
surfacing unique insights which
the clients considered to be important. For projects that focused on
issues that had not been previously
investigated, companies found the
ZMET data useful in a number of
ways. A sample of action-producing insights that clearly have ad
copy implications (although that
may not have been the driving
force behind the research) include:
ß A product believed to be an
impulse purchase is not and, there-
48
fore, point-of-purchase advertising and product display strategies
needed to be reconsidered.
Product-purchase and productusage experiences interact and
hence overall communication
strategy had to be reconsidered.
Consumer perceptions of a
company did not match how
key managers understood their
public image.
An advertising concept contained two important dimensions
that had not been uncovered
previously.
A more useful way to think
about creating advertising copy.
A unique way of advertising a
new product concept.
A new understanding of how
consumers perceive innovations.
A new positioning for an existing product.
Although ZMET addresses
many limitations of other techniques it has limitations of its own.
First, proper data analysis requires
researcher familiarity with the disciplinary foundations of the technique. This is more than a modest
start-up cost for the researchers
and being unfamiliar with these
literatures can result in misuse of
the tool and data. Additionally, interviewers have an important role
during data collection, since each
step can be introduced in different
ways and individual differences
among participants may call for
somewhat different approaches.
Skill is required to make the
judgment of when and how to do
this. Further, interviewers play an
integral role in the analysis of each
participant’s data. Thus, ZMET interviewers require special training
beyond that associated with typical
personal interviewing. Also, the
graphics imaging technicians must
be well versed in digital-imaging
technologies as well as the basic
Journal of ADVERTISING RESEARCH - JULY/AUGUST 1995
research approach.
Second, the technique is very labor intensive. Post-interview data
analyses, the creation of animated
versions of selected vignettes, and
the development of a inal report
involving sensory dictionaries is
demanding. Relatedly, the process
of managing images and creating
an interactive CD and associated
videotape requires expertise with
certain hardware and software.
Third, although ZMET identiies important factors inluencing
consumers and clariies both the
positive and negative experience
of these factors, it does not provide
(because of sample size) estimates
of the percentage of a larger population who feel negatively and
positively. Further, quantitative
estimates of the relative strength
of association between constructs
are not possible.
Finally, the pictures participants
bring to the interview and the various sensory images they discuss
are representative of the kinds of
images they ind familiar and are
likely to elicit certain concepts.
They are not, however, a substitute
for creative thinking about visual
and other images that could be still
more impactful in activating the
common mental model (consensus
map).
Conclusion
Market researchers can develop
tools that provide still more usable
and valid knowledge about the
marketplace by making use of the
premises discussed at the outset
of this article. These premises
are derived from diverse ields of
inquiry in the social and biological
sciences
and in the humanities about
how people make sense of and
communicate about their personal
and social worlds. The technique
introduced here draws upon these
M E TA P H O R - B A S E D A D V E RT I S I N G R E S E A R C H
ields and illustrates how efforts
to engage consumers in nonverbal
communication and understand the
meaning of metaphors can elicit
rich stories from which representative mental models can be extracted. These mental models reveal
basic reasoning processes and
provide deep, useful insights about
consumers and their latent and
emerging needs. Such insights can
provide developers of advertising
copy and creative staff guidance
for capturing consumer attention
and engaging their thought processes.
GERALD ZALTMAN is the Joseph C. Wilson
Professor of Business Administration, Harvard University. He has a Ph.D. in sociology
from the Johns Hopkins University and an
MBA degree from the University of Chicago
He has authored or edited 27 books and
over 100 journal articles Dr Zaltman has received the American Marketing Association’s
Richard D Inwin Distinquished Educator
Award, the Association for Consumer
Research’s Fe low Award, and the Knowledge Utilization Society’s Scientiic Achievement Award. He has been cited in numerous
surveys as one of the leading thinkers in
marketing and in consumer behavior.
ROBIN HIGIE COULTER is associate
professor of marketing in the School of
Business Administration at the University
of Connecticut. She received her Ph D and
M.B.A from the Joseph M. Katz Graduate
School of Business, University of Pittsburgh.
Her research interests include advertising
effects, research methods, and consumer
decision-making Professor Coulter has been
pubished in such Journals as the Journal of
Applied Psychology, the Journal of Advertising, the Journal of Advertising Research,
and the Journal of Retailing. Howes, David,
ed. The Varieties of Sensory Experience:
A Sourcebook in the Anthropology of the
Senses. Toronto, Canada: University of
Toronto Press, 1991.
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