Visual exploration of emotional body language: a behavioural and eye-tracking study

Area of Science:

• Cognitive Psychology
• Neuroscience
• Social Psychology

Background:

• Bodily postures are crucial for understanding emotions and intentions.
• Limited research exists on eye movement patterns in emotional body language (EBL) recognition.
• The 'left-gaze bias' in scanning centrally presented stimuli is well-documented, but its application to body posture recognition is unexplored.

Purpose of the Study:

• To investigate the presence of a left-gaze bias during the visual exploration of emotional body language (EBL).
• To examine how EBL recognition modulates visual exploration mechanisms, specifically fixation patterns.
• To analyze fixation patterns (number and latency) when judging the emotional intensity of static body postures (Angry, Happy, Neutral).

Main Methods:

• Participants judged the emotional intensity of static bodily postures (Angry, Happy, Neutral) presented centrally.
• Eye movement patterns, including the number and latency of first fixations, were recorded.
• Analysis focused on gaze exploration differences related to emotional content and potential left-gaze bias.

Main Results:

• The study provides the first evidence of a left-gaze bias in scanning body postures, indicated by the latency of first fixations.
• This left-gaze bias may be linked to the greater expressiveness of the observer's left hand when viewing body postures.
• While the number of fixations did not fully support the hypothesis, distinct viewing patterns emerged between Angry and Happy postures.

Conclusions:

• The findings confirm a left-gaze bias in EBL recognition, integrating spatial and temporal gaze dimensions.
• This bias suggests a specific attentional mechanism related to processing body language.
• The study advances our understanding of the visual exploration strategies employed in interpreting emotional body cues.