The Influence of Key Facial Features on Recognition of Emotion in Cartoon Faces

Race and gender biases in assessing pain intensity and medication needs among Chinese observers

Introduction

Pain-related decision-making can be influenced by the caregiver and sufferer's demographic factors, such as race and gender, which are commonly considered individually. However, such factors may influence pain assessment interdependently based on caregivers' stereotypical beliefs.

Objectives

This study investigated how sufferers' race and gender affect Chinese observers' evaluations of pain intensity and medication needs and the associations with the observers' race and gender-related stereotypical beliefs.

Methods

One hundred sixty-two Chinese participants completed a pain facial expression rating task assessing the level of pain intensity and the extent to which they believe the sufferer needs pain medication for East Asian, White, and Black sufferers, followed by a battery of questionnaires measuring their gender and race role expectation of pain.

Results

Chinese observers were more stringent on East Asians' pain intensity and needs for medication than Whites and Blacks'. However, when Black and East Asian sufferers were perceived to have a similar level of pain, East Asians were more likely to receive medication than Blacks, which is partly due to the observers' stereotypical beliefs that Blacks would have a speedier recovery than East Asians.

Conclusions

Our results provided evidence that in addition to the in-versus-out-group preferences, one's sociocultural-related stereotypical beliefs can account for racial disparities in pain-related decision-making.

Facial features of cartoon characters and their perceived attributes

The aim of this study is to investigate the relationship between skeletal antero-posterior profile of popular family cartoon characters and their perceived personal characteristics. The Internet Movie DataBase (IMDB) was used to identify popular animated family movies released since 2000. Cartoon characters were identified, and classified based on their gender (male/female), skeletal profile (Class I, II or III) and character assessment (protagonist/antagonist). Descriptive statistical analysis was carried out. Chi Square analysis was used to assess the differences (p-value) between gender and character assessment against the skeletal profile. Fifty popular animated family movies were identified. Within these 88 humanoid cartoon characters were identified made up of 32 male protagonists, 27 female protagonists, 22 male antagonists and 7 female antagonists. 40, 30, 21 were assessed as having a Class I, II and III skeletal profiles respectively. Statistically significant differences were observed in both FPFA and MPFP values for Class III characters (P = 0.009 and P = 0.006, respectively). However, no significant variations were noted when comparing the remaining groups. Female antagonists and male protagonists were most likely to be portrayed with a Class III skeletal pattern when compared to female protagonists and male antagonists respectively.

Facial icons as indexes of emotions and intentions

Various objects and artifacts incorporate representations of faces, encompassing artworks like portraits, as well as ethnographic or industrial artifacts such as masks or humanoid robots. These representations exhibit diverse degrees of human-likeness, serving different functions and objectives. Despite these variations, they share common features, particularly facial attributes that serve as building blocks for facial expressions-an effective means of communicating emotions. To provide a unified conceptualization for this broad spectrum of face representations, we propose the term "facial icons" drawing upon Peirce's semiotic concepts. Additionally, based on these semiotic principles, we posit that facial icons function as indexes of emotions and intentions, and introduce a significant anthropological theory aligning with our proposition. Subsequently, we support our assertions by examining processes related to face and facial expression perception, as well as sensorimotor simulation processes involved in discerning others' mental states, including emotions. Our argumentation integrates cognitive and experimental evidence, reinforcing the pivotal role of facial icons in conveying mental states.

Trait anger and negative interpretation bias in neutral face perception

Introduction

Anger is a basic emotion helping people to achieve goals by preparing the body for action and prompting others to change their behavior but is also associated with health issues and risks. Trait anger, the disposition to experience angry feelings, goes along with an attribution of hostile traits to others. Negative distortions in the interpretation of social information have also been observed in anxiety and depression. The present study examined the associations between components of anger and negative interpretation tendencies in the perception of ambiguous and neutral schematic faces controlling for anxiety, depressed mood, and other variables.

Methods

A sample of 150 young adults performed a computer-based perception of facial expressions task and completed the State-Trait Anger Expression Inventory (STAXI-2) along with other self-report measures and tests.

Results

Trait anger and anger expression correlated with the perception of negative affects in neutral but not in ambiguous faces. More specifically, trait anger was linked to the attribution of anger, sadness, and anxiety to neutral faces. Trait anger predicted perceived negative affects in neutral faces when adjusting for anxiety, depression, and state anger.

Discussion

For neutral schematic faces, the present data support an association between trait anger and negatively biased interpretation of facial expression, which is independent of anxiety and depressed mood. The negative interpretation of neutral schematic faces in trait angry individuals seems not only to comprise the attribution of anger but also of negative emotions signaling weakness. Neutral schematic facial expressions might be useful stimuli in the future study of anger-related interpretation biases.

The Relations of Attention to and Clarity of Feelings With Facial Affect Perception

Attention to emotions and emotional clarity are core dimensions of individual differences in emotion awareness. Findings from prior research based on self-report indicate that attention to and recognition of one's own emotions are related to attention to and recognition of other people's emotions. In the present experimental study, we examined the relations of attention to and clarity of emotions with the efficiency of facial affect perception. Moreover, it was explored whether attention to and clarity of emotions are linked to negative interpretations of facial expressions. A perception of facial expressions (PFE) task based on schematic faces with neutral, ambiguous, or unambiguous emotional expressions and a gender decision task were administered to healthy individuals along with measures of emotion awareness, state and trait anxiety, depression, and verbal intelligence. Participants had to decide how much the faces express six basic affects. Evaluative ratings and decision latencies were analyzed. Attention to feelings was negatively correlated with evaluative decision latency, whereas clarity of feelings was not related to decision latency in the PFE task. Attention to feelings was positively correlated with the perception of negative affects in ambiguous faces. Attention to feelings and emotional clarity were not related to gender decision latency. According to our results, dispositional attention to feelings goes along with an enhanced efficiency of facial affect perception. Habitually paying attention to one's own emotions may facilitate processing of external emotional information. Preliminary evidence was obtained suggesting a relationship of dispositional attention to feelings with negative interpretations of facial expressions.

Lateral Habenula Responses During Eye Contact in a Reward Conditioning Task

For many animals, social interaction may have intrinsic reward value over and above its utility as a means to the desired end. Eye contact is the starting point of interactions in many social animals, including primates, and abnormal patterns of eye contact are present in many mental disorders. Whereas abundant previous studies have shown that negative emotions such as fear strongly affect eye contact behavior, modulation of eye contact by reward has received scant attention. Here we recorded eye movement patterns and neural activity in lateral habenula while monkeys viewed faces in the context of Pavlovian and instrumental conditioning tasks. Faces associated with larger rewards spontaneously elicited longer periods of eye contact from the monkeys, even though this behavior was not required or advantaged in the task. Concurrently, lateral habenula neurons were suppressed by faces signaling high value and excited by faces signaling low value. These results suggest that the reward signaling of lateral habenula may contribute to social behavior and disorders, presumably through its connections with the basal ganglia.