Evolutionary biology

Biology

Variety (cybernetics)

Developmental psychology

Function (biology)

Cognitive psychology

Artificial intelligence

Psychology

Facial expression

Programming language

Aggression

Computer science

Expression (computer science)

Negative emotion

Communication

Social psychology

Psychological Science

Extremely positive experiences, and positive appraisals thereof, produce intense positive emotions that often generate both positive expressions (e.g., smiles) and expressions normatively reserved for negative emotions (e.g., tears). We developed a definition of these dimorphous expressions and tested the proposal that their function is to regulate emotions. We showed that individuals who express emotions in this dimorphous manner do so as a general response across a variety of emotionally provoking situations, which suggests that these expressions are responses to intense positive emotion rather than unique to one particular situation. We used cute stimuli (an elicitor of positive emotion) to demonstrate both the existence of these dimorphous expressions and to provide preliminary evidence of their function as regulators of emotion.

Dimorphous Expressions of Positive Emotion: Displays of Both Care and Aggression in Response to Cute Stimuli