Colorfulness influences perceptions of valence and arousal.

Research on color-emotion associations provides evidence that hue, chroma, and lightness relate to various emotional experiences. Most of this research has assessed these relationships via isolated color swatches while confounding color dimensions. We broadened the medium in which color-emotion associations were made by manipulating color in photographs varying in valence and/or arousal, and we solely focused on the chroma dimension. In Experiment 1, participants perceived neutral and positive-valence photographs to be happier and more arousing when displayed chromatically, relative to achromatically. In Experiment 2, participants increased the chroma content of photographs to make them appear maximally happy, and they decreased the chroma content of photographs to make them appear maximally sad. In Experiment 3, participants altered the chroma content of photographs to their preferred levels, with positive-valence photographs containing the most chroma, followed by neutral, then negative-valence photographs. In Experiment 4, participants increased the chroma content of photographs to make them appear maximally positive or arousing, and they decreased chroma to make photographs appear maximally negative or calming. This pattern was similar regardless of the initial valence/arousal content of the images. These results indicate that chroma may convey emotion-relevant information independent of hue or lightness. (PsycInfo Database Record (c) 2024 APA, all rights reserved).

Awe arises in reaction to exceeded rather than disconfirmed expectancies.

Awe is a fascinating emotion, associated with positive consequences such as greater prosociality, generosity, and epistemic openness. Unfortunately, in spite of the weighty consequences of awe, the exact way in which it arises, and what it entails, is still a puzzle. Particularly puzzling is the question of whether awe is the result of expectancy violation. While awe is thought to arise in reaction to expectancy-violating objects or events, classical expectancy violations (e.g., a red queen of spades playing card) do not tend to cause awe. To shed light on this problem, we distinguished two types of expectancy violations-those that disconfirm and those that exceed one's expectancies-and we investigated whether awe is more likely to arise in reaction to one versus the other. We also looked at what appraisals constitute and are most important to the awe experience and how they structurally interact. To do this, we utilized network analysis and mapped out the network structure of appraisals linked to awe and to expectancy violations. Across two experimental studies (N = 823), we demonstrated that awe arises in reaction to exceeded (rather than disconfirmed) expectancies and that appraisals linked to exceeded expectancies (vastness and uniqueness) are central to awe, while appraisals linked to disconfirmed expectancies (uncertainty and inconsistency) are peripheral to the awe experience. Taken together, our investigation sheds new light on psychologists' understanding of expectancy violations and reveals when and how awe arises and what it entails. (PsycInfo Database Record (c) 2023 APA, all rights reserved).

Wearing N95, Surgical, and Cloth Face Masks Compromises the Perception of Emotion.

According to the familiar axiom, the eyes are the window to the soul. However, wearing masks to prevent the spread of viruses such as COVID-19 involves obscuring a large portion of the face. Do the eyes carry sufficient information to allow for the accurate perception of emotions in dynamic expressions obscured by masks? What about the perception of the meanings of specific smiles? We addressed these questions in two studies. In the first, participants saw dynamic expressions of happiness, disgust, anger, and surprise that were covered by N95, surgical, or cloth masks or were uncovered and rated the extent to which the expressions conveyed each of the same four emotions. Across conditions, participants perceived significantly lower levels of the expressed (target) emotion in masked faces, and this was particularly true for expressions composed of more facial action in the lower part of the face. Higher levels of other (non-target) emotions were also perceived in masked expressions. In the second study, participants rated the extent to which three categories of smiles (reward, affiliation, and dominance) conveyed positive feelings, reassurance, and superiority, respectively. Masked smiles communicated less of the target signal than unmasked smiles, but not more of other possible signals. The present work extends recent studies of the effects of masked faces on the perception of emotion in its novel use of dynamic facial expressions (as opposed to still images) and the investigation of different types of smiles. Supplementary Information: The online version contains supplementary material available at 10.1007/s42761-021-00097-z.

The role of facial coloration in emotion disambiguation.

Previous research has demonstrated that some pairs of emotion expressions are confusing to observers because they share common facial-muscular expressive features. Recent research has suggested that another expressive feature, facial coloration, can facilitate the disambiguation of these emotion expressions. The current work tests this hypothesis by presenting participants with pairs of ambiguous emotion expressions with varying facial coloration, then assessing perceived emotion via continuous ratings and categorizations. The results demonstrated that facial coloration can influence perceived emotion within the emotion pairs of anger-disgust (Experiment 1), surprise-fear (Experiments 2a and 2b), and tearful sadness-happiness (Experiment 3). Further, this influence contributed to emotion disambiguation nonuniformly between emotion pairs. Implications discussed include the role of facial coloration in emotion perception, conceptualizations of emotion categories, and the use of posed facial expression stimuli in emotion research. (PsycInfo Database Record (c) 2022 APA, all rights reserved).

Facial coloration influences social approach-avoidance through social perception.

Perceptions of others' social characteristics are essential for guiding social behaviour and decision making. Recent research has demonstrated that increased facial redness facilitates both positive (e.g. health, attractiveness, happiness) and negative (e.g. dominance, anger) social evaluations. Given that similar facial colouration can lead to diverging evaluations, it is unclear how people integrate these cues to inform social decisions (e.g. approach-avoidance). We suggest that the influence of facial redness on social perceptions and decisions depends on contextual information, including facial-muscular emotion expressions. We test this hypothesis across two studies where participants view faces either increasing or decreasing redness, evaluate them on a range of social characteristics (i.e. aggressiveness, attractiveness, health, friendliness, dominance) and decide whether to approach or avoid them. Increased facial redness facilitated, and decreased redness impeded (to a greater extent), perceptions of each social characteristic. However, the extent of this influence was moderated by the muscular expression (i.e. neutral, happy, angry). Further, we found that the influence of facial redness on approach-avoidance was largely mediated by evaluations of attractiveness and health. Altogether, the current work provides nuanced insights into facial colouration's role as a social signal that informs social perception and decision making.

Sclera and Iris Color Interact to Influence Gaze Perception.

The white sclera is important in facilitating gaze perception in humans. Iris color may likewise influence gaze perception but no previous studies have directly assessed its effect. We therefore examined how the interaction between sclera and iris color influences human gaze perception. We recorded the eye movements of human participants as they performed a visual search task with human faces exhibiting directed or averted gaze. The faces either exhibited light or dark irises. In addition, the faces had sclera that were depigmented (white) or pigmented (matched the color of the iris). We found that participants were quick and accurate in evaluating gaze regardless of iris color in faces with depigmented sclera. When the sclera were pigmented, participants were slower to evaluate the gaze of faces with both light and dark irises but these effects were most pronounced in the faces with dark irises. Furthermore, participants were generally less accurate in assessing faces with pigmented sclera when the irises were dark rather than light. Our results suggest that depigmented sclera are especially important for gaze perception in faces with dark irises. Because depigmented sclera likely evolved at a time when ancestral humans exhibited dark irises, the depigmented sclera may have been crucial for efficient and accurate gaze perception in ancestral humans.

Social Perception of Facial Color Appearance for Human Trichromatic Versus Dichromatic Color Vision.

Typical human color vision is trichromatic, on the basis that we have three distinct classes of photoreceptors. A recent evolutionary account posits that trichromacy facilitates detecting subtle skin color changes to better distinguish important social states related to proceptivity, health, and emotion in others. Across two experiments, we manipulated the facial color appearance of images consistent with a skin blood perfusion response and asked participants to evaluate the perceived attractiveness, health, and anger of the face (trichromatic condition). We additionally simulated what these faces would look like for three dichromatic conditions (protanopia, deuteranopia, tritanopia). The results demonstrated that flushed (relative to baseline) faces were perceived as more attractive, healthy, and angry in the trichromatic and tritanopia conditions, but not in the protanopia and deuteranopia conditions. The results provide empirical support for the social perception account of trichromatic color vision evolution and lead to systematic predictions of social perception based on ecological social perception theory.

Facial blushing influences perceived embarrassment and related social functional evaluations.

Facial blushing involves a reddening of the face elicited in situations involving unwanted social attention. Such situations include being caught committing a social transgression, which is typically considered embarrassing. While recent research has demonstrated that facial redness can influence social evaluations, including emotional states such as perceived anger, the influence of blushing on social perceptions related to embarrassment or social transgression has yet to be investigated. Across three experiments, we manipulated the redness of neutral faces (Exp. 1) and faces displaying different emotional expressions (Exps. 2 and 3), and had participants evaluate perceived embarrassment, apology sincerity, and likeliness to forgive a transgression for each set of stimuli. Results indicated that redder (relative to baseline) faces influenced perceived embarrassment, apology sincerity, and likeliness to forgive a transgression. We discuss the implications in the context of a social functional account of facial colour in emotion expression and perception.

Face color facilitates the disambiguation of confusing emotion expressions: Toward a social functional account of face color in emotion communication.

Facial expressions of emotion include both muscular and color modulations that contribute to the accurate perception of emotion. However, some emotion categories share common facial-muscular features during the dynamic expressive sequence, which can lead to confusion and misidentification. The current research posits that a potential social function of facial-color expression lies in its ability to disambiguate confusing facial-muscular emotion expressions. In Experiment 1, participants were asked to rate and categorize confusing emotion expressions (i.e., mixed anger-disgust) that varied in facial color (i.e., CIELAB a*, red-green axis). The results showed that changes in facial color facilitated the disambiguation of the confusing emotion expressions for both ratings and categorizations. In Experiment 2, participants were asked to change the color on faces with either disgust, confusing, or anger expressions, to match the emotion being expressed. The results showed that participants differentially used color information to make the faces maximally expressive. Additionally, participants in Experiment 2 consistently applied facial color changes regardless of disambiguating information provided by either explicit instructions or validated expressions. The findings from the current research support a social functional account of facial color in the communication of emotion; facial color makes a unique contribution to emotion expression, independent of facial musculature. (PsycINFO Database Record (c) 2019 APA, all rights reserved).

Emotion-color associations in the context of the face.

Facial expressions of emotion contain important information that is perceived and used by observers to understand others' emotional state. While there has been considerable research into perceptions of facial musculature and emotion, less work has been conducted to understand perceptions of facial coloration and emotion. The current research examined emotion-color associations in the context of the face. Across 4 experiments, participants were asked to manipulate the color of face, or shape, stimuli along 2 color axes (i.e., red-green, yellow-blue) for 6 target emotions (i.e., anger, disgust, fear, happiness, sadness, surprise). The results yielded a pattern that is consistent with physiological and psychological models of emotion. (PsycINFO Database Record (c) 2018 APA, all rights reserved).

Facial redness, expression, and masculinity influence perceptions of anger and health.

Past research has found that skin colouration, particularly facial redness, influences the perceived health and emotional state of target individuals. In the current work, we explore several extensions of this past research. In Experiment 1, we manipulated facial redness incrementally on neutral and angry faces and had participants rate each face for anger and health. Different red effects emerged, as perceived anger increased in a linear manner as facial redness increased. Health ratings instead showed a curvilinear trend, as both extreme paleness and redness were rated as less healthy than moderate levels of red. Experiment 2 replicated and extended these findings by manipulating the masculinity of both angry and neutral faces that varied in redness. The results found the effect of red on perceived anger and health was moderated by masculine face structure. Collectively, these results show that facial redness has context dependent effects that vary based on facial expression, appearance, and differentially impact ratings of emotional states and health.

Facial Redness Increases Men's Perceived Healthiness and Attractiveness.

Past research has shown that peripheral and facial redness influences perceptions of attractiveness for men viewing women. The current research investigated whether a parallel effect is present when women rate men with varying facial redness. In four experiments, women judged the attractiveness of men's faces, which were presented with varying degrees of redness. We also examined perceived healthiness and other candidate variables as mediators of the red-attractiveness effect. The results show that facial redness positively influences ratings of men's attractiveness. Additionally, perceived healthiness was documented as a mediator of this effect, independent of other potential mediator variables. The current research emphasizes facial coloration as an important feature of social judgments.

Women's Facial Redness Increases Their Perceived Attractiveness: Mediation Through Perceived Healthiness.

In the present research, we investigated whether the red-attraction relation that has been observed for men viewing women may also be observed with regard to women's facial redness. We manipulated facial redness by slightly increasing or decreasing the redness on the faces of baseline pictures of target women, and then had men judge the attractiveness of the women. We also examined healthiness perceptions as a mediator of the redness-attraction relation, along with several other candidate mediator variables. A series of experiments showed that increased redness led to increased ratings of attractiveness, and decreased redness led to decreased ratings of attractiveness. Perceived healthiness was documented as a mediator of the influence of female facial redness on male perceptions of attractiveness, and this mediation was independent of other candidate mediator variables. The findings highlight the importance of attending to facial coloration as an attraction-relevant cue and point to interesting areas for subsequent research.