Individuals with autism have difficulties learning implicit sequences of social interactions that require mentalizing

Area of Science:

• Neuroscience
• Psychology
• Social Cognition

Background:

• Autism Spectrum Disorder (ASD) research highlights the cerebellum's role in processing action sequences and social context.
• Mental state attribution (mentalizing) is crucial for social interactions and is often atypical in ASD.

Purpose of the Study:

• To investigate implicit social sequencing in adults with ASD.
• To test the hypothesis that individuals with ASD exhibit deficits in implicit sequencing within a social negotiation context involving mentalizing.

Main Methods:

• A novel ultimatum serial reaction time task was employed with 20 adults with ASD and 20 matched controls.
• Participants responded to offers presented in repeated or random sequences, with varying proposer traits and offer volatility to assess context effects.

Main Results:

• Autistic participants did not show a speed advantage for repeated sequences, unlike controls.
• Both groups learned stable sequences faster, but response times slowed in repeated, volatile sequences.
• Social context factors influenced sequence learning in both autistic individuals and controls.

Conclusions:

• Adults with ASD demonstrate impaired implicit social sequencing.
• Autistic individuals may compensate for sequencing deficits in certain social contexts or with explicit instructions.
• Social sequence learning presents a potential target for interventions in ASD.