| Sumario: | By synthesizing existing behavioural studies through a meta-analytic approach, the current study compared the performances of Autism spectrum disorder (ASD) and typically developing groups in audiovisual speech integration and investigated potential moderators that might contribute to the heterogeneity of the existing findings. In total, nine studies were included in the current study, and the pooled overall difference between the two groups was significant, g = − 0.835 (p < 0.001; 95% CI − 1.155 to − 0.516). Age and task scoring method were found to be associated with the inconsistencies of the findings reported by previous studies. These findings indicate that individuals with ASD show weaker McGurk effect than typically developing controls.
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