Biological motion perception in autism spectrum disorder: a meta-analysis

Area of Science:

• Neuroscience
• Developmental Psychology
• Cognitive Science

Background:

• Biological motion perception is crucial for understanding social cues like intentions and emotions.
• Autism spectrum disorder (ASD) is characterized by social interaction difficulties, making biological motion a key research area.
• Previous studies on biological motion in ASD show variable results, necessitating a quantitative summary.

Purpose of the Study:

• To quantitatively summarize findings on biological motion perception in autism spectrum disorder.
• To identify factors contributing to the variability in existing research.
• To investigate age-related differences in biological motion processing in ASD.

Main Methods:

• A systematic literature search across five electronic databases.
• Inclusion of 52 studies encompassing behavioral, eye-tracking, electroencephalography (EEG), and functional magnetic resonance imaging (fMRI) data.
• Application of a three-level random-effects meta-analytic approach.

Main Results:

• Individuals with ASD generally exhibit reduced performance in perceiving and interpreting biological motion.
• Performance deficits are more pronounced when higher-order social information, such as emotion, needs to be inferred.
• The performance gap between autistic and neurotypical individuals diminishes with increasing age, with children showing the largest effect size.

Conclusions:

• Methodological standardization is essential for consistent findings in biological motion research in ASD.
• Clearer distinctions in age groups and experimental paradigms are needed for accurate interpretation of group differences.
• Understanding biological motion perception is vital for addressing social communication challenges in autism spectrum disorder.