Dual Development of Affective-Speech-Based Emotion Perception

Area of Science:

• Developmental psychology
• Cognitive neuroscience
• Speech perception

Background:

• Adults interpret emotions in speech using prosody, while young children rely on lexical content.
• The developmental trajectory of socio-emotional processing in emotion perception is not fully understood.
• Distinct developmental pathways exist for unconscious emotion perception (gaze-based) and conscious emotion judgment.

Purpose of the Study:

• To investigate the development of dual processes in affective-speech-induced emotion perception in 3- and 5-year-old children.
• To differentiate how children utilize lexical content versus prosody in emotion recognition.
• To examine the relationship between gaze patterns and emotion perception strategies.

Main Methods:

• Children (3 and 5 years old) were presented with affective speech containing conflicting lexical and prosodic cues.
• Participants identified speaker emotions by selecting corresponding facial expressions (happy or angry).
• Gaze duration towards facial expressions was recorded to assess attentional focus.

Main Results:

• Three-year-olds relied more on lexical content, whereas 5-year-olds prioritized prosody for emotion judgment.
• Both age groups exhibited longer gaze durations on facial expressions congruent with prosodic cues, indicating unconscious processing.
• Evidence suggests a dual-process model: unconscious prosody-expression matching and conscious weighting of lexical/prosodic information.

Conclusions:

• Emotion perception from speech develops through distinct unconscious and conscious pathways.
• Unconscious emotion perception, linked to prosody, appears early and is consistent across tested ages.
• Conscious emotion assessment strategies shift from lexical reliance to prosodic weighting during early childhood.