Differentiated, rather than shared, strategies for time-coordinated action in social and non-social domains in autistic individuals.

Researchers studied how autistic and non-autistic people coordinate movements in time, both when interacting with others and when doing tasks alone. While both groups performed differently, the key finding was that non-autistic people used similar strategies across both types of tasks, but autistic people used completely different approaches for social versus non-social activities. This suggests autistic individuals develop unique, specialized ways of handling different situations rather than having an overall timing problem.

This study examined time-coordinated actions in autistic and typically developing individuals across social and non-social domains. Participants completed synchronized gaze-pointing tasks (social) and finger-tapping to stimuli (non-social). While both groups showed different synchronization behaviors, principal component analysis revealed that typically developing individuals showed associations between social and non-social performance, whereas autistic individuals demonstrated highly differentiated strategies with no cross-domain associations. These findings challenge deficit-centered models of autism, suggesting instead that autistic individuals develop individualized, domain-specific behavioral strategies rather than having a general synchronization impairment.

The research supports an individual-centered approach to understanding autism heterogeneity and emphasizes the need for personalized therapeutic interventions.

Results support personalized therapy approaches that recognize individual behavioral strategies rather than assuming universal deficits. Interventions should be tailored to domain-specific patterns and individual differences in strategy use rather than applying one-size-fits-all approaches.

Sample size not reported in abstract. Study design unclear. Limited to synchronization tasks only. Generalizability to other behavioral domains uncertain. Individual variation within autism group not detailed.

Autism spectrum disorder (ASD) is a neurodevelopmental condition with a highly heterogeneous adult phenotype that includes social and non-social behavioral characteristics. The link between the characteristics assignable to the different domains remains unresolved. One possibility is that social and non-social behaviors in autism are modulated by a common underlying deficit. However, here we report evidence supporting an alternative concept that is individual-centered rather than deficit-centered.

Individuals are assumed to have a distinctive style in the strategies they adopt to perform social and non-social tasks with these styles presumably being structured differently between autistic individuals and typically-developed (TD) individuals. We tested this hypothesis for the execution of time-coordinated (synchronized) actions. Participants performed (i) a social task that required synchronized gaze and pointing actions to interact with another person, and (ii) a non-social task that required finger-tapping actions synchronized to periodic stimuli at different time-scales and sensory modalities. In both tasks, synchronization behavior differed between ASD and TD groups.

However, a principal component analysis of individual behaviors across tasks revealed associations between social and non-social features for the TD persons but such cross-domain associations were strikingly absent for autistic individuals. The highly differentiated strategies between domains in ASD are inconsistent with a general synchronization deficit and instead highlight the individualized developmental heterogeneity in the acquisition of domain-specific behaviors. We propose a cognitive model to help disentangle individual-centered from deficit-centered effects in other domains. Our findings reinforce the importance to identify individually differentiated phenotypes to personalize autism therapies.