Production of emotional facial expressions in European American, Japanese, and Chinese infants

European American, Japanese, and Chinese 11-month-olds participated in emotion-inducing laboratory procedures. Facial responses were scored with BabyFACS, an anatomically based coding system. Overall, Chinese infants were less expressive than European American and Japanese infants. On measures of smiling and crying, Chinese infants scored lower than European American infants, whereas Japanese infants were similar to the European American infants or fell between the two other groups. Results suggest that differences in expressivity between European American and Chinese infants are more robust than those between European American and Japanese infants and that Chinese and Japanese infants can differ significantly. Cross-cultural differences were also found for some specific brow, cheek, and midface facial actions (e.g., brows lowered). These are discussed in terms of current controversies about infant affective facial expressions.     

Observing emotion in infants: Facial expression, body behavior, and rater judgments of responses to an expectancy-violating event.

Eleven-month-old European-American, Japanese, and Chinese infants (ns=23, 21, and 15, respectively) were videotaped during baseline and stimulus episodes of a covert toy-switch procedure. Infants looked longer at the object during the expectancy-violating event (stimulus episode) but did not produce more surprise-related facial expressions. American and Japanese infants produced more bodily stilling during stimulus than baseline, and American infants also produced more facial sobering. Naive raters viewing both episodes could correctly identify the expectancy-violating event. Rater judgments of surprise were significantly related to infants' bodily stilling and facial sobering. Judgments of interest were related to cessation of fussing. Thus, observer judgments of infant emotions can be systematically related to behaviors other than prototypic emotional facial expressions. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Mother-infant face-to-face interaction in Japan and the United States: A laboratory comparison using 3-month-old infants.

In this cross-cultural comparison 36 Japanese and 36 American 3-month-old infant–mother dyads were videotaped in a standardized laboratory setting in their own countries. Mothers in both countries responded contingently to these infant behaviors, but there were differences in the type and timing of maternal behavior vis-à-vis infant behavior. Japanese mothers were more likely than American mothers to punctuate their facial expressions and vocalizations with looming upper-body movements and with touches and they were less likely to respond selectively to infant vocalizations. American mothers held their faces closer to the infants' and provided primarily facial and vocal displays for the infant. Japanese infants tended to display longer average durations of smiling and vocalizing with a lower rate of onsets compared with American infants. The results have implications for understanding the role of the face-to-face period in human development and the way in which cultural differences in interpersonal communicative style may guide the development of infant affective expression. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Adult judgments and fine-grained analysis of infant facial expressions: Testing the validity of a priori coding formulas.

Three studies tested whether infant facial expressions selected to fit Max formulas (C. E. Izard, 1983) for discrete emotions are recognizable signals of those emotions. Forced-choice emotion judgments (Study 1) and emotion ratings (Study 2) by naive Ss fit Max predictions for slides of infant joy, interest, surprise, and distress, but Max fear, anger, sadness, and disgust expressions in infants were judged as distress or as emotion blends in both studies. Ratings of adult facial expressions (Study 2 only) fit a priori classifications. In Study 3, the facial muscle components of faces shown in Studies 1 and 2 were coded with the Facial Action Coding System (FACS; P. Ekman and W. V. Friesen, 1978) and Baby FACS (H. Oster and D. Rosenstein, in press). Only 3 of 19 Max-specified expressions of discrete negative emotions in infants fit adult prototypes. Results indicate that negative affect expressions are not fully differentiated in infants and that empirical studies of infant facial expressions are needed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Functional analysis of the contents of maternal speech to infants of 5 and 13 months in four cultures: Argentina, France, Japan, and the United States.

Maternal speech to infants of 2 ages in 4 cultures was examined to probe how infant age and cultural variation influence the contents of that speech. Argentine, French, Japanese, and US American mothers were individually videotaped in naturalistic free-play interactions at home with their 5- and 13-mo-old infants, maternal speech was transcribed, and the contents classified as affect salient or information salient. Mothers in the 4 cultures use all speech categories to young infants, speak to older infants more than to younger infants, but differ in the emphasis of the speech. Similarities speak to the universality of maternal speech to infants, provoked perhaps by infants' common psychological status; differences in the speech mothers choose to emphasize speak perhaps to the expression of cultural preferences. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Culture, ethnicity, and children's facial expressions: A study of European American, mainland Chinese, Chinese American, and adopted Chinese girls.

This investigation extends previous research documenting differences in Chinese and European American infants' facial expressivity. Chinese girls adopted by European American families, nonadopted Mainland Chinese girls, nonadopted Chinese American girls, and nonadopted European American girls responded to emotionally evocative slides and an odor stimulus. European American girls smiled more than Mainland Chinese and Chinese American girls and scored higher than Mainland Chinese girls for disgust-related expressions and overall expressivity. Adopted Chinese girls produced more disgust-related expressions than Mainland Chinese girls. Self-reported maternal strictness, aggravation, positive expressiveness, and cultural identification correlated with children's facial responses, as did number of siblings and adults in the home. Results suggest that culture and family environment influences facial expressivity, creating differences among children of the same ethnicity. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Facial expressivity in infants of depressed mothers.

Examined facial expressions in 84 3-mo-old infants of mothers classified as depressed, nondepressed, or low scoring on the Beck Depression Inventory. Mother–infant dyads were videotaped during a 3-min face-to-face interaction, and the videotapes were coded by using the AFFEX facial expression coding system. Infants of both depressed and low-scoring mothers showed significantly more sadness and anger expressions and fewer interest expressions than infants of nondepressed mothers. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Facial reactions to smoking cues relate to ambivalence about smoking.

In this study, the authors used the Facial Action Coding System (FACS; P. Ekman & W. V. Friesen, 1978) to examine the immediate facial responses of abstinent smokers exposed to smoking cues. The aim was to investigate whether facial expressions thought to be linked to ambivalence would relate to more traditional measures of ambivalence about smoking. The authors adapted N. A. Heather's (1998) definition of ambivalence about smoking, which emphasizes difficulty in refraining from smoking despite intentions to do so. Ambivalence expressed during smoking cue exposure was operationalized as the simultaneous occurrence of positive and negative affect-related facial expressions. Thirty-four nicotine-deprived dependent smokers were presented with in vivo smoking cues, and their facial expressions were coded using FACS. Participants also completed self-report measures related to ambivalence about smoking. Smokers who displayed ambivalent facial expressions during smoking cue exposure reported significantly higher scores on measures of smoking ambivalence than did those who did not display ambivalent facial expressions. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

The induced affect response: 10-week-old infants' responses to three emotion expressions.

Responses to mothers' presentations of happy, sad, and angry faces were studied in a sample of 12 infants, 6 boys and 6 girls at age 10 weeks?±?5 days. Each infant's mother displayed noncontingent, practiced facial and vocal expressions of the 3 emotions. Each expression occurred 4 times, with a 20-s head-turn-away between presentations. The orders of presentation were randomly assigned within sex of infant. Mothers' and infants' facial behaviors were coded using the Maximally Discriminative Facial Movement Coding System. The data indicated that (a) the infants discriminated each emotion, (b) apparent matching responses may occur under some conditions but not all, and (c) these apparent matching responses were only a part of nonrandom behavior patterns indicating induced emotional or affective responses of infants to mothers' expressions. (36 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

The thrill of victory and the agony of defeat: Spontaneous expressions of medal winners of the 2004 Athens Olympic games.

Facial behaviors of medal winners of the judo competition at the 2004 Athens Olympic Games were coded with P. Ekman and W. V. Friesen's (1978) Facial Affect Coding System (FACS) and interpreted using their Emotion FACS dictionary. Winners' spontaneous expressions were captured immediately when they completed medal matches, when they received their medal from a dignitary, and when they posed on the podium. The 84 athletes who contributed expressions came from 35 countries. The findings strongly supported the notion that expressions occur in relation to emotionally evocative contexts in people of all cultures, that these expressions correspond to the facial expressions of emotion considered to be universal, that expressions provide information that can reliably differentiate the antecedent situations that produced them, and that expressions that occur without inhibition are different than those that occur in social and interactive settings. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Evidence and a computational explanation of cultural differences in facial expression recognition.

Facial expressions are crucial to human social communication, but the extent to which they are innate and universal versus learned and culture dependent is a subject of debate. Two studies explored the effect of culture and learning on facial expression understanding. In Experiment 1, Japanese and U.S. participants interpreted facial expressions of emotion. Each group was better than the other at classifying facial expressions posed by members of the same culture. In Experiment 2, this reciprocal in-group advantage was reproduced by a neurocomputational model trained in either a Japanese cultural context or an American cultural context. The model demonstrates how each of us, interacting with others in a particular cultural context, learns to recognize a culture-specific facial expression dialect. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Patterns of emotion expression during separation in the strange-situation procedure.

The facial expressions of 28 13-mo-old middle-class children were videotaped during the 3-min separation episode of the Ainsworth strange-situation procedure (ASSP). Facial behavior was analyzed to determine the patterns of emotional expressions during separation and to assess the relations between these patterns and types of attachment as assessed by the ASSP. Findings reveal that anger was the dominant negative emotion expressed by the majority of Ss in each of 3 ad hoc groups determined by level of negative emotion. Some high-negative emotion expressers displayed predominantly anger and others mainly sadness. Patterns of emotion expression varied with type of attachment; Ss who showed an insecure-resistant attachment pattern displayed less interest and more sadness than Ss in the securely attached groups. The proportion of time anger was expressed did not differ significantly with type of attachment. (20 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Effect of facial expression variations on ratings of infants' physical attractiveness.

A potentially important influence on how an adult responds to an infant is the infant's physical attractiveness. To assess whether an infant's physical attractiveness can reliably be judged despite variations in an infant's facial expression, 115 college students rated the "cuteness" of a set of photographs of infants. The set contained 3 photographs varying in facial expression of each of 24 infants. Results indicate that although photographs depicting more positive facial expressions received higher cuteness ratings, cuteness ratings varied less within individual infants than across infants. General facial configuration was more important than facial expression in determining adults' perceptions of infants' cuteness. It is concluded that physical attractiveness appears to be a reliably measurable variable of individual difference as early as infancy. (6 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Infants' responses to facial and vocal emotional signals in a social referencing paradigm

The independent effects of facial and vocal emotional signals and of positive and negative signals on infant behavior were investigated in a novel toy social referencing paradigm. 90 12-month-old infants and their mothers were assigned to an expression condition (neutral, happy, or fear) nested within a modality condition (face-only or voice-only). Each infant participated in 3 trials: a baseline trial, an expression trial, and a final positive trial. We found that fearful vocal emotional signals, when presented without facial signals, were sufficient to elicit appropriate behavior regulation. Infants in the fear-voice condition looked at their mothers longer, showed less toy proximity, and tended to show more negative affect than infants in the neutral-voice condition. Happy vocal signals did not elicit differential responding. The infants' sex was a factor in the few effects that were found for infants' responses to facial emotional signals.     

Classifying chimpanzee facial expressions using muscle action.

The Chimpanzee Facial Action Coding System (ChimpFACS) is an objective, standardized observational tool for measuring facial movement in chimpanzees based on the well-known human Facial Action Coding System (FACS; P. Ekman & W. V. Friesen, 1978). This tool enables direct structural comparisons of facial expressions between humans and chimpanzees in terms of their common underlying musculature. Here the authors provide data on the first application of the ChimpFACS to validate existing categories of chimpanzee facial expressions using discriminant functions analyses. The ChimpFACS validated most existing expression categories (6 of 9) and, where the predicted group memberships were poor, the authors discuss potential problems with ChimpFACS and/or existing categorizations. The authors also report the prototypical movement configurations associated with these 6 expression categories. For all expressions, unique combinations of muscle movements were identified, and these are illustrated as peak intensity prototypical expression configurations. Finally, the authors suggest a potential homology between these prototypical chimpanzee expressions and human expressions based on structural similarities. These results contribute to our understanding of the evolution of emotional communication by suggesting several structural homologies between the facial expressions of chimpanzees and humans and facilitating future research. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Infants' sensitivity to effects of gravity on visible object motion.

A preference method probed infants' perception of object motion on an inclined plane. Infants viewed videotaped events in which a ball rolled downward (or upward) while speeding up (or slowing down). The infants were tested with events in which the ball moved in the opposite direction with appropriate or inappropriate acceleration. Infants aged 7 mo, but not 5 mo, looked longer at the test event with inappropriate acceleration, suggesting emerging sensitivity to gravity. A further study tested whether infants appreciate that a stationary object released on an incline moves downward rather than upward; findings again were positive at 7 mo and negative at 5 mo. A final study provided evidence, nevertheless, that 5-mo-old infants discriminate downward from upward motion and relate downward motion in videotaped events to downward motion in live events. Sensitivity to certain effects of gravity appears to develop in infancy. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Depressed mothers' touching increases infants' positive affect and attention in still-face interactions

The effects of depressed mothers' touching on their infants' behavior were investigated during the still-face situation. 48 depressed and nondepressed mothers and their 3-month-old infants were randomly assigned to control and experimental conditions. 4 successive 90-sec periods were implemented: (A) normal play, (B) still-face-no-touch, (C) still-face-with-touch, and (A) normal play. Depressed and nondepressed mothers were instructed and shown how to provide touch for their infants during the still-face-with-touch period. Different affective and attentive responses of the infants of depressed versus the infants of nondepressed mothers were observed. Infants of depressed mothers showed more positive affect (smiles and vocalizations) and gazed more at their mothers' hands during the still-face-with-touch period than the infants of nondepressed mothers, who grimaced, cried, and gazed away from their mothers' faces more often. The results suggest that by providing touch stimulation for their infants, the depressed mothers can increase infant positive affect and attention and, in this way, compensate for negative effects often resulting from their typical lack of affectivity (flat facial and vocal expressions) during interactions.     

Facial expressions and social responsiveness of blind monkeys.

Conducted 3 experiments with 5 blind and 5 sighted crab-eating monkeys (Macaca fascicularis), and their offspring to (a) test the role of auditory and visual information in attraction of an infant to its mother, (b) determine whether blind infants preferred their mothers to a mother from another group when both females were fully sedated, thus eliminating auditory and visual cues, and (c) assess the frequency and character of social interactions and facial expressions of blind Ss. Results of the 3 experiments show that tactual and perhaps auditory cues maintain the social affinity of blind juvenile monkeys. Olfactory discrimination of individuals was also tested, but not demonstrated. Facial expressions were essentially normal in form, but in some cases they occurred at different frequencies than those of sighted animals. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Maternal stimulation during infant feeding.

Compared maternal stimulation during infant feeding for groups of 4-mo-old bottle-fed and breast-fed, normal and high-risk infants. Mothers tended to reserve their stimulation for the infants' nipple-out pauses from sucking, a suggested measure of the mother's "sensitive timing." The high-risk male infants received more stimulation during sucking periods but were also observably more disorganized in their feeding than other groups, suggesting that the mother's sensitivity cannot be assessed independently of the infant's responsivity. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

A developmental perspective on emotions in play therapy.

Describes and compares normative emotional responses in solitary play, and determines developmental changes associated with expression of emotion in play. A developmental perspective on emotions is described. The results from 3 studies that examined the expression of emotion (facial expressions) during infants' and children's (aged 6 mo–5 yrs) solitary play are discussed as a foundation from which to consider the functions of emotion in play therapy. Facial expressions of emotions were assessed using the System for Identifying Affect Expressions by Holistic Judgments (C. E. Izard et al, 1983). Exploration and play were measured using a standardized scale developed by J. Belsy and R. K. Most (1981). (PsycINFO Database Record (c) 2010 APA, all rights reserved)