Retrieval effects of observationally acquired stimulus-response bindings in participants with high and low autistic traits.

The present study sought to use a paradigm that allows the study of mental representations of observed actions. We investigated whether retrieval of observationally acquired stimulus-response bindings are impaired in participants with high (compared with low) autistic traits. In an extreme group comparison, participants with high versus low autistic traits worked through an observational SR binding and a standard SR binding task (to control for general deficits in cognitive performance). As expected, groups did not differ with regard to retrieval of transient bindings between stimuli and self-performed responses (standard SR binding & retrieval effects). Against our expectations, the same was true for the retrieval of observationally acquired SR bindings, which was of comparable magnitude in both high and low autistic trait groups. Bayes Factor analysis indicates that our evidence for this null finding has to be regarded as weak evidence. Our findings provide tentative evidence against the view that imitative effects are reduced (hypo-imitation) or increased (hyper-imitation) when autistic trait expression is high. (PsycInfo Database Record (c) 2022 APA, all rights reserved).