The Triple I Hypothesis: Taking Another(’s) Perspective on Executive Dysfunction in Autism
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The executive dysfunction theory attempts to explain not only the repetitive behaviours but also the socio-communicative difficulties in autism. While it is clear that some individuals with autism perform poorly on certain executive function tasks, it remains unclear what underlies these impairments. The most consistent and striking difficulties are seen on tasks that are open-ended in structure, lack explicit instructions and involve arbitrary rules. I propose that impairment on such tasks is not due to executive dysfunction; instead, poor performance results from difficulties forming an implicit understanding of the experimenter’s expectations for the task, resulting in egocentric and idiosyncratic behaviour. These difficulties in taking another’s perspective may be explained parsimoniously by the mentalising difficulties robustly demonstrated to exist in autism.
KeywordsAutism Executive function Theory of mind Mentalising Implicit Arbitrary
The author wishes to thank John Morton and Uta Frith for helpful conversation and lively discussion whilst writing this paper and over a number of years. This work was supported by a British Academy Fellowship PDF/2009/213.
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