In T. Dalgleish and M. Power (Eds.).
Handbook of Cognition and Emotion.
Sussex, U.K.: John
Wiley & Sons, Ltd., 1999.
Chapter 3
Basic Emotions
Paul Ekman
University of California, San Francisco, CA, USA
INTRODUCTION
In this chapter I consolidate my previous writings about basic emotions (Ekman, 1984, 1992a,
1992b) and introduce a few changes in my thinking. My views over the past 40 years have
changed radically from my initial view (Ekman, 1957) that: (a) a pleasant鈥攗npleasant and
active鈥攑assive scale were sufficient to capture the differences among emotions; and (b) the
relationship between a facial configuration and what it signified is socially learned and culturally
variable. I was forced to adopt the opposite view by findings from my own and others鈥 cross-
cultural studies of facial expressions. There are some who have challenged this by now quite
large body of evidence: I describe those challenges and the answers to them in Chapter 16.
The framework I describe below is most influenced by Darwin (1872/1997) and Tomkins
(1962), although I do not accept in total what either said. There are three meanings of the term
鈥渂asic鈥 (see also Ortony & Turner, 1990). First, it distinguishes those who maintain that there are
a number of separate emotions, that differ one from another in important ways. From this
perspective, fear, anger, disgust, sadness and contempt, all negative emotions, differ in their ap-
praisal, antecedent events, probable behavioral response, physiology and other characteristics
described below. So, too, amusement, pride in achievement, satisfaction, relief and contentment,
all positive emotions, differ from each other. This basic emotions perspective is in contrast to
those who treat emotions as fundamentally the same, differing only in terms of intensity or
pleasantness.
To identify separate discrete emotions does not necessarily require that one also take an
evolutionary view of emotions. A social constructionist could allow for separate emotions
without embracing the second meaning of the adjective 鈥渂asic鈥. Even the discovery of universals
in expression or in antecedent events does not require giving a major role to evolution. Instead,
one can attribute universals to species-constant learning鈥攕ocial learning which will usually
occur for all members of the species, regardless of culture (cf. Allport, 1924). In this view it is
ontogeny, not phylogeny, which is responsible for any commonalities in emotion; universals in
expression are due to what ethologists call 鈥渃onventionalization鈥, not 鈥渞itualization鈥 (see Ekman,
1979 for a discussion of these distinctions as applied to emotion).
The second meaning of the adjective 鈥渂asic鈥 is to indicate instead the view that emotions
evolved for their adaptive value in dealing with
fundamental life tasks.
Innate factors play a role
in accounting for the characteristics they share, not species-constant or species-variable learning.
There are a number of ways to describe these fundamental life tasks. Johnson-Laird & Oatley
(1992) say they are universal human predicaments, such as achievements, losses, frustrations,
etc. Each emotion thus prompts us in a direction which, in the course of evolution, has done
better than other solutions in recurring circumstances that are relevant to goals. Lazarus (1991)
talks of 鈥渃ommon adaptational tasks as these are appraised and configured into core relational
themes鈥 (p. 202) and gives examples of facing an immediate danger, experiencing an irrevocable
loss, progressing towards the realization of a goal, etc. Stein & Trabasso (1992) say that in
happiness a goal is attained or maintained, in sadness there is a failure to attain or maintain a
goal, in anger an agent causes a loss of a goal, and in fear there is an expectation of failure to
achieve a goal. Tooby & Cosmides (1990) tell us that emotions impose on the present world an
interpretative landscape derived from the covariant structure of the past . . .鈥. Emotions, they say,
deal with recurrent ". . . adaptive situations . . . fighting, falling in love, escaping predators,
confronting sexual infidelity, and so on, each [of which] recurred innumerable times in
evolutionary history . . .鈥 (pp. 407鈥408). Tooby & Cosmides emphasize what I consider the
crucial element which distinguishes the emotions: our appraisal of a current event is influenced
by our ancestral past.
These different descriptions are quite compatible, each emphasizing another aspect of the
phenomenon. Common to all these views is the presumption that emotions are designed to deal
with inter-organismic encounters, between people or between people and other animals.
Nevertheless, it is important to note that emotions can and do occur when we are not in the
presence of others, and are not imagining other people. We can have emotional reactions to
thunder, music, loss of physical support, auto-erotic activity, etc. Yet I believe the primary
function of emotion is to mobilize the organism to deal quickly with important interpersonal
encounters, prepared to do so by what types of activity have been adaptive in the past. The past
refers in part to what has been adaptive in the past history of our species, and the past refers also
to what has been adaptive in our own individual life history.
The term 鈥渂asic鈥 has been used also to describe elements that combine to form more complex
or compound emotions. So, for example, smugness might be considered to be a blend of the two
elemental emotions, happiness and contempt. Earlier we (Ekman & Friesen, 1975) made just
such a proposal about facial expressions. I am less certain now about whether or not two basic
emotions can occur simultaneously, although that may well depend upon what aspect of emotion
is considered. In any case, I will not consider further this meaning of the term 鈥渂asic鈥, since no
one (other than Plutchik, 1962), who currently works from a basic emotion framework, has been
much concerned with this meaning.
THE CHARACTERISTICS THAT DISTINGUISH BASIC EMOTIONS
I will describe a number of characteristics which are useful in distinguishing one emotion from
another. I will also describe other characteristics shared by all emotions, but which are helpful in
distinguishing emotions from other affective phenomena, such as moods or emotional traits.
Distinctive Universal Signals
I have gone back and forth on the question of whether or not a universal signal is the
sine qua
non
for emotion (Ekman, 1984; 1992a, 1992b). Once again I will set out that claim, as a
challenge for someone to identify states which have all the other characteristics I describe below
but which have no signal. To date there is no such evidence, and I doubt it will be found. I
believe it was central to the evolution of emotions that they inform conspecifics, without choice
or consideration, about what is occurring: inside the person (plans, memories, physiological
changes), what most likely occurred before to bring about that expression (antecedents), and
what is most likely to occur next (immediate consequences. regulatory attempts, coping). For
example, when we see a person with a disgust expression, we know that the person is responding
to something offensive to taste or smell, literally or metaphorically, that the person is likely to
make sounds such as 鈥測uck鈥 rather than 鈥測um鈥, and is likely to turn away from the source of
stimulation. Elsewhere (Ekman, 1993; 1997) I have described seven classes of information that
emotional signals may provide, and the research necessary to establish that this is so.
Emotional expressions are crucial to the development and regulation of interpersonal
relationships. To mention just three examples, facial expressions should be involved in the
formation of attachments (in infancy as well as in courtship), and in the regulation, acceleration
or deceleration of aggression. People I have studied who have congenital facial paralysis
(Mobius syndrome) report great difficulty in developing and maintaining even casual
relationships, since they have no capability for facial expressiveness. Ross (1981) also found that
stroke patients who can not properly identify the prosody that accompanies speech, or who
cannot generate the prosody that accompanies emotion utterances, have severe interpersonal
difficulties.
Moods and emotional traits do not own their own distinctive signals, but instead we infer
these affective phenomena, in part at least, from the fact that they are saturated with the signals
of one or another emotion. A high incidence of anger-related signals can suggest an irritable
mood or a hostile trait, for example.
To say that it was crucial to the evolution of emotions that they inform conspecifics about
matters of import, does not mean that in each and every instance in which emotions occur a
signal will be present. Emotions obviously do occur without any evident signal, because we can,
to a very large extent, inhibit the appearance of a signal. Also, a threshold may need to be
crossed to bring about an expressive signal, and that threshold may vary across individuals. If we
could measure the brain areas which send information to the facial nucleus during spontaneous
emotional experience, I expect we would find that there is some distinctive activity, even in low
threshold states or when an individual is attempting to inhibit emotion. This remains an empirical
question.
Not only can there be emotion without expression, there can be what appears to be expression
without emotion. Humans can deliberately or habitually fabricate a facsimile of an emotional
expression, facially and vocally. This may happen for many reasons; for example, to mislead or
to refer to an emotion that is not currently experienced. There is quite robust evidence (for a
summary, see Ekman & Davidson, 1990) that facial expressions differ in subtle ways when a
smile occurs involuntarily as part of one or another enjoyment experiences, as compared to either
social smiling or deliberately made false smiles. If the research was done I expect it would also
be possible to distinguish fabricated signs of emotion from actual emotional expressions for
other emotions, and in the voice as well as the face (for a further discussion of when there is
emotion without expression and expression without emotion, see Ekman 1993; 1997).
Emotion-specific Physiology
If basic emotions evolved to deal with fundamental life tasks, they should not only provide
information through expressions to conspecifics about what is occurring, but there should also be
physiological changes preparing the organism to respond differently in different emotional states.
There is evidence (Ekman, Levenson & Friesen, 1983; Levenson, Ekman & Friesen, 1990) for
distinctive patterns of autonomic nervous system (ANS) activity for anger, fear and disgust, and
it appears that there may also be a distinctive pattern for sadness (Levenson et al., 1991). These
findings have now been replicated in four separate experiments, in two different age groups.
Although there are some inconsistencies between the ANS patterns they found and the findings
of other investigators, there are many consistencies with the results of Schwartz, Weinberger &
Singer (1981), Ax (1953),
Roberts & Weerts (1982) and Graham (1962).
The only recent challenge to our findings was Stemmler鈥檚 (1989) report that ANS patterning
was specific to how the emotion was elicited. However, this may be due to a number of
methodological problems, including measuring physiology a considerable period after the
induction was over, studying very low emotional intensities, and including a substantial number
of subjects who reported not experiencing the emotion. We have preliminary evidence in two
different studies (Levenson et al., 1991; Ekman & Davidson, 1991) of the same emotion-specific
pattern when emotion was elicited in very different ways.
Boiten (1996) also claims to have disproved our findings of emotion-specific ANS changes as
a result of assembling different patterns of facial muscular movement. We (Levenson & Ekman,
in preparation) believe he did not produce such evidence, but instead that his data further
supports our findings. However, we acknowledge that the matter is far from being completely
settled. Noting that qualification, I will further consider what the implications are if further
research strengthens and supports our findings to date of emotion-specific physiology.
Such evidence would be a challenge to those who view emotion as a social construction with
no important biological contribution. Social constructionists might dismiss our findings by
claiming that these different patterns of ANS activity were socially learned, not the product of
evolution. Their argument would be that people are taught to engage in different types of
behavior when experiencing different emotions. Over time this will establish different patterns of
ANS activity, subserving these different actions patterns. If people show the same emotion-
specific ANS activity, that may simply reflect common, culturally-based socialization practices.
Presumably those who advocate such a view should expect different behavioral patterns to be
taught for each emotion, and therefore different patterns of ANS activity should come to be
established with each emotion in cultures which are known to differ in their attitudes about
emotion.
Most simply put, the social constructionist emphasizes the past history of the individual, while
the evolutionary theorist emphasizes the past history of the species in explaining why there is
emotion-specific ANS activity. If it is only ontogeny, then to the extent to which different people
learn different ways of behaving when experiencing one or another emotion, there should be
different patterns of ANS activity observed for the emotions we have studied. Levenson et al.
(1992) recently repeated their experiments in a non-Western culture. They studied the
Minangkabau of Western Sumatra, a fundamentalist Moslem, matrilineal society. They
replicated Ekman, Levenson & Friesen鈥檚 (1983) original findings of emotion-specific ANS
activity in this very different culture. This provides important support consistent with an
evolutionary view that these are basic emotions.
Does the failure to find emotion-specific ANS activity for enjoyment and surprise mean that
these are not basic emotions? Kemper (1978) would make that argument, for he views
differentiated ANS activity as the
sine qua non
for basic emotions. But consider why we expect
emotion-specific ANS activity in the first place. Our presumption is that these ANS patterns
evolved because they subserve patterns of motor behavior which were adaptive for each of these
emotions, preparing the organism for quite different actions. For example, fighting might well
have been the adaptive action in anger, which is consistent with the finding that blood goes to the
hands in anger. Fleeing from a predator might well have been the adaptive action in fear, which
is consistent with the finding that blood goes to large skeletal muscles (for a more elaborate
discussion of this reasoning, see Levenson, Ekman & Friesen, 1990).
Freezing in fear might seem to create a problem for this line of reasoning, but not if freezing is
interpreted as a fearful state in which the organism is nevertheless still prepared, autonomically,
for fast flight if the freezing action does not provide concealment. Not every fearful experience
involves a threat from which one can flee. The doctor鈥檚 report, that more tests are necessary to
confirm whether the preliminary results are correct in indicating a terminal illness, arouses fear
but the event is not one the person can flee from. The ANS pattern of activity which subserves
flight might still occur in this example, if the evolved motor program for this emotion is flight. It
is a question which awaits research.
脰hman鈥檚 (1986) analysis of fear is relevant to these complexities. He distinguishes fear of
animals, fear of people, and fear of inanimate objects, suggesting that different actions may have
evolved for fear of a predator as compared to social fears. It is not clear whether he views
predator fear as including fear of other aggressive humans, or whether it is strictly limited to fear
of other animals. Neither is it certain from his writings whether he would consider the fear of the
doctor鈥檚 news about terminal illness to be a predator or social fear.
H no specific pattern of motor activity had survival value for an emotion, then there would be
no reason to expect a specific pattern of ANS activity to have been established for that emotion.
That is why I think we have not found an emotion-specific pattern, a pattern which differs from
each of the other emotions, for either surprise or enjoyment.
However, it is necessary to posit emotion-specific central nervous system (CNS) activity in
my account of basic emotions. The distinctive features of each emotion, including the changes
not just in expression but in memories, imagery, expectations and other cognitive activities,
could not occur without central nervous system organization and direction. There must be
unique
physiological patterns for each emotion, and these CNS patterns should be specific to these
emotions not found in other mental activity. Here I am reaching far beyond the data, but not far
beyond what the new techniques for measuring brain activity may allow us to discover in this
decade of the brain.
My contention is consistent with the findings of those who have used EEG measures of regional
brain activity to study emotion (for reviews of this literature, see Davidson, 1984, 1987).
Davidson et al.鈥檚 (1990) recent findings of different patterns of regional brain activity coincident
with enjoyment and disgust facial expressions can be explained as reflecting
either
differences in
approach vs. withdrawal, or positive vs. negative emotions. More critical for my argument are
new findings of LeDoux (1992).
Automatic Appraisal Mechanism
Many years ago I (Ekman, 1977) proposed two appraisal mechanisms, one automatic and the
other extended:
There must be an appraiser mechanism which selectively attends to those stimuli (external or internal) which are
the occasion for . . . [one or another emotion]. Since the interval between stimulus and emotional response is
sometimes extraordinarily short, the appraisal mechanism must be capable of operating with great speed. Often
the appraisal is not only quick but it happens without awareness, so I must postulate that the appraisal mechanism
is able to operate automatically. It must be constructed so that it quickly attends to some stimuli, determining not
only that they pertain to emotion, but to which emotion . . . Appraisal is not always automatic. Sometimes the
evaluation of what is happening is slow, deliberate and conscious. With such a more extended appraisal there
may be some autonomic arousal, but perhaps not of a kind which is differentiated. The person could be said to be
aroused or alerted, but no specific emotion is operative. Cognition plays the important role in determining what
will transpire. During such extended appraisal the evaluation may match to the selective filters of the automatic
appraiser . . . . It need not be, however; the experience may be diffuse rather than specific to one emotion鈥 (pp.
58鈥59).
Similar views have since been described by Zajonc (1985), 脰hman (1986). Leventhal & Scherer
(1987) and Buck (1985). LeDoux鈥檚 (1991) study of the anatomy of emotion has led him also to
take a view nearly identical to what I proposed:
Emotional processing systems . . . tend to use the minimal stimulus representation possible to activate emotional
response control systems, which characteristically involve relatively hard-wired, species-typical behaviors and
physiological reactions. Emotional reactions . . . need to be executed with speed, and the use of the highest level
of stimulus processing is maladaptive when a lower level will do . . . However, not all emotional reactions can be
mediated by primitive sensory events and subcortical neural circuits (p. 50).
In a major shift in his own position to incorporate the evidence on basic emotions, Lazarus
(1991) recently adopted my position on this issue: 鈥淚 distinguish between two modes of
appraisal: one automatic, unreflective, and unconscious or preconscious, the other deliberate and
conscious鈥 (p. 3, Chapter 5). Lazarus succinctly described what he called a 鈥減sychobiological
principle鈥 which, he said, 鈥減rovides for universals in the emotion process. Once the appraisals
have been made, the emotional response is a foregone conclusion, a consequence of biology鈥
(pp. 191鈥192). Lazarus here goes further than I do, as I believe that the responses reflect not
just biology but social learning as well. Stein & Trabasso鈥檚 (1992) analysis of appraisal, while
based on very different data, is very similar, as they point out, to Lazarus鈥檚 position.
It is not known exactly how a biological contribution to appraisal operates; what it is that is
given, which is then operated on automatically. It seems reasonable to presume that that which is
biologically given must be related to the universal antecedents of emotion described below. How
does this occur, by what mechanism?
Automatic appraisal does not simply and solely operate on what is given biologically, dealing
only with stimulus events that exactly fit what is given. In all likelihood, not enough is given for
automatic appraisal to ever operate without considerable amplification and detailing through
social learning (see, especially, 脰hman, 1986 on this point). An exception might be the appraisal
which occurs to a sudden loss of support, or when an object is perceived to be moving very
quickly directly into one鈥檚 visual field. But such examples are probably rare. Perhaps they act as
metaphors for many other events to become associated through experience with emotion.
Automatic appraisal operates also on a variety of stimulus events that we have repeatedly
encountered or with events which though rare were extraordinarily intense. Lazarus notes how
differences in our experience allows for enormous variations in the specifics of what calls forth
emotion which are attributable to personality, family and culture. And yet it is not totally
malleable. There are some commonalities in what calls forth an emotion for anyone:
The ancestrally recurrent structured situation that the organism categorizes itself as being in is the 鈥渕eaning鈥 of
the situation for that organism. It 鈥渟ees鈥, i.e. is organized to respond to, previous fitness contingencies, not
present ones... Emotions
...
lead organisms to act as if certain things were true about the present circumstances,
whether or not they are, because they were true of past circumstances . .
.
In this lies their strength and their
weakness . . . [The automatic appraisal] cannot detect when the invariances that held true ancestrally no longer
obtain (Tooby & Cosmides, 1990, pp. 418鈥419).
Often in civilized life, our emotions occur in response to words, not actions, to events which
are complex and indirect, and it is an extended appraisal process which operates with
consciousness and deliberation. Then the person is quite aware of what Lazarus calls the
鈥渕eaning analysis鈥 which occurs. Here is another entry place for social learning to generate
large differences between cultural groups, and major individual differences within a culture.
A number of theorists (see reviews by Ellsworth, 1991; Scherer, 1991) have developed
models of how appraisal processes may operate. Reading their descriptions and considering most
of their data sources, it appears that they are considering only extended appraisal, but I think that
they believe their models to characterize automatic appraisal as well. Their models are not
contradictory with a basic emotions position, but they apparently do see a contradiction. Lazarus,
I believe, is the only appraisal theorist who also incorporates basic emotions in his framework.
Lazarus differs from the other appraisal theorists in not offering a model of how the appraisal
process works. Instead, he more abstractly describes the relevant principal and the prototypic
events (core relational themes) for each emotion.
Universal Antecedent Events
If emotions are viewed as having evolved to deal with fundamental life tasks in ways which have
been adaptive phylogenetically, then it is logically consistent to expect that there will be some
common elements in the contexts in which emotions are found to occur. This is not to presume
that every social context which calls forth an emotion will be the same for all people within or
across cultures. Clearly, there must be major differences attributable to social learning
experiences. 脰hman (1986) describes how both evolution and social learning contribute to the
establishment of those events which call forth one or another emotion.
. . . evolutionary economy has left to environmental influences to inscribe the exact characteristics of dangerous
predators . . . learning is critically involved in selecting which stimuli activate the predatory defense system. But
this learning is likely to be biologically primed or constrained in the sense that the responses are much more
easily attached to some types of stimuli than to others. In other words, it is appropriate to speak about
biologically prepared learning. Thus
it
is likely to require only minimal input in terms of training, and to result in
very persistent responses that are not easily extinguished (pp. 128鈥129).
脰hman cites research by Mineka et al. (1984) showing that limited exposure is sufficient for
establishing snake fears in monkeys which are very difficult to extinguish. Lazarus (1991) cites
this same study to argue his rather similar view. Although he emphasizes what he calls 鈥渕eaning
analysis鈥, Lazarus also describes common antecedent events. Johnson-Laird & Oatley鈥檚 (1992)
view is also similar.
My view on this matter, which is in agreement with 脰hman, Lazarus, Johnson-Laird &
Oatley, and Stein and her colleagues, developed in the 1970s when I learned of the findings of
Boucher & Brant, which they did not publish until some years later (1981). They found
commonalities in emotion antecedents in the many non-Western cultures they examined. It was
not in the specific details but on a more abstract level that universality in antecedent events was
found. The loss of a significant other, they found, is 鈥. . . an antecedent to sadness in many,
perhaps all, cultures. But who a significant other is or can be will differ from culture to culture鈥
(Boucher, 1983, p. 407).
On the basis of Boucher & Brant鈥檚 findings, Ekman & Friesen (1975) formulated prototypic
interpersonal events which would universally call forth each of this set of emotions. For
example, the antecedent event for fear is physical or psychological harm. Lazarus (1991), has a
similar but in some ways different account, describing what he calls the 鈥渃ore relational theme鈥
unique to the appraisal of each emotion. Neither of us has evidence, but what we each have
proposed is consistent with Boucher & Brant鈥檚 findings, and with those of Scherer and his group
(Scherer, Summerfield & Wallbott, 1983) in their study of the antecedents of emotion in Western
cultures.
Unfortunately there is little ethological description of the commonalities in the naturally
occurring antecedent events for emotions within and across cultures. There is questionnaire and
also interview data in which subjects are asked to describe emotional events. However, we do
not yet know the extent to which such data resembles what actually occurs during emotion, how
much idealization, and stereotyping may occur when subjects coldly describe what they think
about their emotional experience.
So far I have discussed a number of characteristics which distinguish one emotion from
another鈥攗niversal signals, distinctive physiology, automatic appraisal influenced by both
ontogenetic and phylogenetic past, and commonalities in the antecedents events which call forth
the emotion. Now I will much more briefly describe a number of other characteristics.
I do
not
maintain that if biology has played an important role in emotion, then emotions must
appear, fully differentiated, at birth or early in life before much opportunity for learning has
occurred. Izard (1977) disagrees and has reported evidence which he believes shows the early
appearance of each emotion. His position and evidence has been convincingly challenged by
Camras (1992) and also by Oster, Hegley & Nagel (1992). When this matter is settled,
regularities in the first appearance of each emotion may be useful in differentiating one emotion
from another.
Emotions are likely to be observable in other primates. Darwin considered that to be crucial,
and it was the chief focus of his book
The Expression of the Emotions in Man and Animals
(1872/1998). In modern times, Plutchik was the first (1962) to make this a defining characteristic
of emotions. A number of those studying animal behavior have resisted emotion terminology,
much like the Skinnerians of times past, but some (Chevalier-Skolnikoff, 1973; Redican, 1982)
have pointed to similarities in expression between humans and other primates. It is possible that
there might be some emotions which are unique to humans, but there is no convincing evidence
that is so. Of course, the capacity to represent emotional experience in words changes many
aspects of emotional experience in ways which I can not describe here.
Emotions can have a very fast onset, beginning so quickly that they can happen before one is
aware that they have begun. Quick onset is central to the adaptive value of emotions, mobilizing
us quickly to respond to important events. It is also adaptive for the response changes which can
occur so quickly not to last very long unless the emotion is evoked again. Here is not the place to
argue about just how long an emotion typically lasts, but certainly it is not hours or days, but
more in the realm of minutes and seconds. I believe those who claim that emotions endure for
much longer time periods are summating what is actually a series of briefer emotion episodes.
Because emotions can occur with a very rapid onset, through automatic appraisal, with little
awareness, and with involuntary changes in expression and physiology, we often experience
emotions as happening to us. Emotions are unbidden, not chosen by us.
I expect that specific emotions regulate the way in which we think, and that this will be
evident in memories, imagery and expectations. I suspect that the relationship between emotions
and thoughts is not solely a function of social learning because of biological constraints put on
the cognitive system as well as the emotion system.
The subjective experience of emotion, how each emotion feels, is for some at the center of
what an emotion is. This presumably includes physical sensations, and other feelings which are
the consequence of feedback from the various response changes which occur uniquely for each
emotion. Regrettably, most of what we know about subjective experience comes from
questionnaires, filled out by people who are not having an emotion, trying to remember what it
feels like. It is no easy matter to assess subjective experience, especially if what is wanted is
something more than simply the amount of positive or negative emotion (see Rosenberg &
Ekman, 1994).
Before turning to the question of how many emotions there are, let me mention the concept of
emotion families, which may help to clear away some of the confusion and argument about this
matter. Each emotion is not a single affective state but a family of related states. Each member of
an emotion family shares the characteristics I have described. These shared characteristics within
a family differ between emotion families, distinguishing one family from another. Put in other
terms, each emotion family can be considered to constitute a theme and variations. The theme is
composed of the characteristics unique to that family, the variations on that theme are the
product of individual differences, and differences in the specific occasion in which an emotion
occurs. The themes are the product of evolution, while the variations reflect learning.
Although the evidence is certainly not available now. I propose that the following list of
emotions will be found to share the characteristics listed in Table 3.1, and to be distinguishable
one from another: amusement, anger, contempt, contentment, disgust, embarrassment,
excitement, fear, guilt, pride in achievement, relief, sadness/distress, satisfaction, sensory
pleasure, and shame. When it is remembered that each of these words denotes a family of related
emotions, then this list of 15 emotions is quite expanded. Clearly, it omits some affective
phenomena which others have considered to be emotions. Guilt is a likely candidate, and I have
no reason to make a guess one way or another. Interest, which Tomkins & Izard considered an
emotion, I think may be better regarded as a cognitive state rather than an emotion, but see
Reeve鈥檚 (1993) relevant study. The decisions are not mine; they instead should be resolved by
research, which will establish whether or not these candidates evidence the characteristics listed
in Table 3.1.
More irksome to some may be my omission of romantic or parental love and hate, which are
clearly affective, as is grief, and jealousy. Elsewhere (Ekman. 1984; 1992a, 1992b) I have more
fully explained my view that these are emotional
plots,
more specific, more enduring than the
basic emotions, specific contexts in which a number but not all of the basic emotions can be
expected to occur. There is another set of affective phenomena, the moods, which have different
causes and last much longer, and are highly saturated with emotions. And still another set of
affective phenomena are the affective personality traits, such as hostility.
Before leaving the struggle over the question as to how many emotions there are, it is worth
considering the possibility that there are probably more emotional words than there are emotions,
terms which refer not only to the emotion but features of the eliciting situation, of differential
response to that situation, etc. Oatley & Johnson-Laird (1987) and Stein & Trabasso (1992)
elaborate how this occurs, and how such variations in emotion terms can be dealt with from a
basic emotions viewpoint.
Table 3.1
Characteristics which distinguish basic emotions from one another and from other
affective phenomena
1. Distinctive universal signals
2. Distinctive physiology
3. Automatic appraisal, tuned to:
4. Distinctive universals in antecedent events
5. Distinctive appearance developmentally
6. Presence in other primates
7. Quick onset
8. Brief duration
9. Unbidden occurrence
10. Distinctive thoughts, memories images
11. Distinctive subjective experience
DOES ANY ONE CHARACTERISTIC DISTINGUISH THE BASIC EMOTIONS?
I do not think any of the characteristics should be regarded as the
sine qua non
for emotions, the
hallmark which distinguishes emotions from other affective phenomena. What is unique is that
when an emotion occurs we are dealing with current fundamental life tasks in ways which were
adaptive in our evolutionary past. This is not to deny that our own individual past experience will
also influence how we deal with these fundamental life tasks, but that is not what is unique to
emotions. It is our past as a species in dealing with fundamental life tasks and how that organizes
and at least initially influences how we appraise and respond to a current event which marks the
emotions. I would add also the high probability that at least some of the time the occurrence of
that emotion is signaled to others involuntarily.
THE VALUE OF THE BASIC EMOTIONS POSITION
The basic emotions position which I have described does not dismiss the variety of affective
phenomena, it attempts to organize those phenomena, highlighting possible differences between
basic emotions and other affective phenomena which can only be determined by further research.
It should be clear by now that I do not allow for 鈥渘on-basic鈥 emotions. All the emotions which
share the characteristics I have described are basic.
If all emotions are basic, what then is the value of using that term? It underlines the
differences between this and other viewpoints and approaches to emotion, which do not consider
emotions to be separate one from another and/or do not take an evolutionary viewpoint. It
captures what is unique about emotion, and what emotions have in common which distinguish
them from other phenomena. The basic emotions framework allows us to distinguish emotions
from other affective phenomena in terms of the characteristics I have described. This framework
serves us well in raising for empirical study a number of questions about other affective states
which further research might show are also basic emotions. The adjective 鈥渂asic鈥 should not be
the issue, however, but instead what questions this stance raises for research about emotion. The
characteristics I have described are meant as challenges for more research. They point us to what
we still need to learn about the emotions. They highlight the gaps in our knowledge. The utility
of this approach will be evident 10 years from now by what research it generates to confirm or
disconfirm the possibilities I have suggested, and new possibilities I have not conceived of.
ACKNOWLEDGEMENTS
I thank Richard Davidson, Phoebe Ellsworth, Wallace V. Friesen, Dacher Keltner, Richard
Lazarus, Robert Levenson, Nancy Stein, Keith Oatley, Harriet Oster and Erika Rosenberg for
their helpful criticisms and suggestions on earlier versions of this paper. Preparation was
supported, by a Research Scientist Award from the National Institute of
Mental Health (MH06091).
REFERENCES
Allport, F. H. (1924).
Social Psychology.
Boston: Houghton Mifflin.
Ax, A. F. (1953). The physiological differentiation between fear and anger in humans.
Psychosomatic Medicine,
15, 433鈥442.
Boiten, F. (1996). Autonomic response patterns during voluntary facial actions
Psychophysiology,
33, 123鈥131.
Boucher. J. D. (1983). Antecedents to emotions across cultures. In S. H. Irvine & J. W. Berry
(eds).
Human Assessment and Cultural Factors.
New York: Plenum, pp. 407鈥420.
Boucher. J. D. & Brant, M. E. (1981). Judgment of emotion: American and Maylay antecedents.
Journal of Cross-cultural Psychology,
12, 272鈥283.
Buck, R. (1985). Prime theory: an integrated theory of motivation and emotion.
Psychological
Review,
92, 389鈥413.
Camras. L. A. (1992). Expressive development and basic emotions.
Cognition and Emotion, 6,
269鈥283.
Chevalier-Skolnikoff, S. (1973). Facial expression of emotion in nonhuman primates. In P.
Ekman (ed.),
Darwin and Facial Expression.
New York: Academic Press, pp. 11鈥83.
Darwin, C. (1872/1998).
The Expression of the Emotions in Man and Animals
(1872).
New York: Philosophical Library. 3rd edn (1998) with Introduction. Afterword and
Commentary by Paul Ekman: London: Harper Collins New York: Oxford University
Press.
Davidson. R. J. (1984). Affect, cognition and hemispheric specialization. In C. F. Izard, J. Kagan
and R. Zajonc (eds),
Emotion, Cognition and Behavior.
New York: Cambridge University
Press, pp. 320鈥365.
Davidson. R. J. (1987). Cerebral asymmetry and the nature of emotion: implications for the study
of individual differences and psychopathology. In R. Takahashi, P. Flor-Henry, I. Gruzelier &
S. Niwa (eds),
Cerebral Dynamics, Laterality and Psychopathology.
New York: Elsevier.
Davidson. R. J., Ekman, P., Saron, C., Senulis, I. & Friesen, W. V. (1990). Emotional expression
and brain physiology. I: Approach/withdrawal and cerebral asymmetry.
Journal of Personality
and Social Psychology
,
58, 330鈥341.
Ekman, P. (1957). A methodological discussion of nonverbal behavior.
Journal of Psychology
,
43, 141鈥149.
Ekman, P. (1977). Biological and cultural contributions to body and facial movement. In J.
Blacking (ed.).
Anthropology of the Body,
London: Academic Press, pp. 34-84.
Ekman, P. (1979). About brows: emotional and conversational signals. In M. von Cranach. K.
Foppa, W. Lepenies & D. Ploog (eds),
Human Ethology,
Cambridge: Cambridge University
Press, pp. 169-248.
Ekman, P. (1984). Expression and the nature of emotion. In K. Scherer & P. Ekman (eds).
Approaches to Emotion.
Hillsdale, NJ: Erlbaum, pp. 319-344.
Ekman, P. (1992a). An argument for basic emotions.
Cognition and Emotion, 6,
169-200.
Ekman P. (1992b). Are there basic emotions?
Psychological Review.
99, 550-553.
Ekman, P. (1993). Facial expression of emotion.
American Psychologist.
48, 384-392.
Ekman, P. (1997). Expression or communication about emotion. In N. Segal, G. E.
Weisfeld & C. C. Weisfeld (eds),
Genetic, Ethological and Evolutionary Perspectives on
Human Development: Essays in Honor of Dr Daniel G. Freedman.
Washington, DC:
American Psychological Association.
Ekman, P. & Davidson, R. J. (1991). Hemispheric activation in different types of smiles.
Unpublished manuscript.
Ekman, P., Davidson, R. J. & Friesen, W. V. (1990). Emotional expression and brain physiology
II: The Duchenne smile.
Journal of Personality and Social Psychology,
58,
342-353.
Ekman, P. & Friesen, W. V. (1975).
Unmasking the Face: A Guide to Recognizing Emotions
from Facial Clues.
Englewood Cliffs, NJ: Prentice-Hall. Reprint edn, Palo Alto, CA:
Consulting Psychologists Press, 1984.
Ekman, P., Levenson, R. W. & Friesen, W. V. (1983). Autonomic nervous system activity
distinguishes between emotions.
Science,
221, 1208-1210.
Ellsworth, P. (1991). Some implications of cognitive appraisal theories of emotion. In K. T.
Strongman (ed.),
International Review of Research on Emotion.
New York: Wiley, pp. 143-
161.
Graham, D. T. (1962). Some research on psychophysiologic specificity and its relation to
psychosomatic disease. In R. Roessler & N. S. Greenfield (eds),
Physiological Correlates of
Psychological Disorder.
Madison WI: University of Wisconsin Press, pp. 221-238.
Izard, C. E. (1977).
Human Emotions.
New York: Plenum Press.
Johnson-Laird, P. N. & Oatley, K. (1992). Basic emotions: a cognitive science approach to
function, folk theory and empirical study.
Cognition and Emotion, 6,
201-223.
Kemper, T. D. (1978).
A Social Interactional Theory of Emotions.
New York: Wiley.
Lazarus, R. S. (1991).
Emotion and Adaptation.
New York: Oxford University Press.
LeDoux, J. F. (1991). Emotion and the brain.
Journal of NIH Research,
3, 49-51.
LeDoux, J. F. (1992). Emotion in the amygdala. In J. P. Aggleton (ed.),
The Amygdala:
Neurobiological Aspects of Emotion, Memory and Mental Dysfunction.
New York: Wiley-
Liss, pp. 339-351.
Levenson, R. W., Carstensen, L. L., Friesen. W. V. & Ekman, P. (1991). Emotion, physiology,
and expression in old age.
Psychology and Aging, 6, 28-35.
Levenson, R. W. & Ekman, P. (in preparation). Emotion specific ANS patterns are supported,
not refuted by Boiten.
Levenson, R. W., Ekman, P. & Friesen. W. V. (1990). Voluntary facial expression generates
emotion-specific nervous system activity.
Psychophysiology,
27, 363-384.
Levenson, R. W., Ekman, P., Heider, K. & Friesen, W. V. (1992). Emotion and autonomic
nervous system activity in the Minangkabau of West Sumatra.
Journal of Personality and
Social Psychology,
62. 972-288.
Leventhal, H. & Scherer, K. R. (1987). The relationship of emotion to cognition: a functional
approach to a semantic controversy.
Cognition and Emotion,
1, 3-28.
Mineka, S., Davidson, M., Cook, M. & Keir, R. (1984). Observational conditioning of snake fear
in Rhesus monkeys.
Journal of Abnormal Psychology,
93, 355-372.
Oatley, K. & Johnson-Laird, P. N. (1987). Towards a cognitive theory of the emotions.
Cognition and Emotion,
1, 29-50.
脰hman, A. (1986). Face the beast and fear the face: animal and social fears as prototypes for
evolutionary analyses of emotion.
Psychophysiology,
23, 123-145.
Ortony, A. & Turner. T. J. (1990). What鈥檚 basic about basic emotions?
Psychological Review,
97, 315-331.
Oster, H., Hegley. D. & Nagel, L. (1992). Adult judgment and fine-grained analysis of infant
facial expression: testing the validity of
a priori
coding formulas.
Developmental Psychology,
28, 1115-1131.
Plutchik, R. (1962).
The Emotions: Facts, Theories and a New Model.
New York: Random
House.
Redican. W. K. (1982). An evolutionary perspective on human facial displays. In P. Ekman (ed.).
Emotion in the Human Face.
2nd edn, pp. 212-280. Elmsford. NY:
Pergamon.
Reeve, J. (1993). The face of interest.
Motivation and Emotion,
17, 353-376.
Roberts, R. J. & Weerts. T. C. (1982). Cardiovascular responding during anger and fear imagery.
Psychological Reports,
50, 219-230.
Rosenberg. F. L. & Ekman, P. (1994). Coherence between expressive and experiential systems in
emotion.
Cognition and Emotion,
8, 201-229.
Ross, F. D. (1981). The aprosodias: functional鈥攁natomical organization of the affective
components of language in the right hemisphere.
Archives of Neurology,
38, 561-569.
Scherer. K. R. (1991). Criteria for emotion-antecedent appraisal: a review. In V. Hamilton, G. H.
Bower & N. H. Fridja (eds).
Cognitive Perspective on Motivation and Emotion.
Dordrecht:
Nijhoff. pp. 89-126.
Scherer, K. R., Summerfield, W. B. & Wallbott. H. G. (1983). Cross-national research on
antecedents and components of emotion: a progress report.
Social Science Information,
22,
355-385.
Schwartz. G. E., Weinberger. D. A. & Singer. J. A. (1981). Cardiovascular differentiation of
happiness, sadness, anger and fear following imagery and exercise.
Psychosomatic Medicine.
43, 343-364.
Stein, N. L. & Trabasso, T. (1992). The organization of emotional experience: creating links
among emotion, thinking and intentional action.
Cognition and Emotion, 6,
225-244.
Stemmler, O. (1989). The autonomic differentiation of emotions revisited: convergent and
discriminant validation.
Psychophysiology,
26, 617-632.
Tomkins, S. S. (1962).
Affect, Imagery, Consciousness. Vol. 1, The positive affects.
New York:
Springer.
Tooby, J. & Cosmides, L. (1990). The past explains the present: emotional adaptations and the
structure of ancestral environment.
Ethology and Sociobiology,
11,
375-424.
Zajonc, R. B. (1985). Emotion and facial efference: a theory reclaimed.
Science,
228, 15-21.