Developmental differences in perceiving arousal and valence from dynamically unfolding emotional expressions.

Area of Science:

• Developmental psychology
• Cognitive neuroscience
• Affective science

Background:

• Emotion perception research traditionally uses static, unimodal facial stimuli from young adults.
• Existing findings suggest a positivity bias in children and a negativity bias in adults, often task-dependent.

Purpose of the Study:

• To investigate developmental differences in emotion perception using a novel database of dynamic, multimodal avatar expressions.
• To determine if established age-related biases in emotion processing re-emerge with more naturalistic stimuli.

Main Methods:

• Created a stimulus database of digital avatars expressing happiness, happy-surprise, anger, and sadness across four age groups.
• Tested arousal and valence perception of positive and negative emotions in children (6-7 years) and young adults.
• Utilized visual-only (face) and visual-verbal (face and voice) presentation conditions.

Main Results:

• High correlations observed between children's and adults' responses, alongside significant developmental differences.
• Children rated negative expressions as more arousing and positive emotions as more positive than adults.
• Visual-verbal stimuli were perceived as more arousing; valence perception varied by emotion type and modality.

Conclusions:

• Dynamic, multimodal stimuli are crucial for understanding naturalistic emotion perception.
• Developmental differences in emotion perception persist even with advanced stimuli, highlighting age-related variations in processing.
• Findings emphasize the need for ecologically valid stimuli in developmental emotion research.