Mental state decoding v. mental state reasoning as a mediator between cognitive and social function in psychosis

Theory of mind deficits in schizophrenia have been parsed into mental state reasoning and mental state decoding components. We report that mental state decoding as measured by the 'Eyes task' better predicted social function than mental state reasoning as measured by the 'Hinting task' in 73 out-patients with chronic schizophrenia. Mental state decoding task performance also partly mediated the influence of basic neuropsychological performance on social function. We discuss these findings in terms of the accumulating evidence that mental state decoding has particular relevance for understanding deficits in social function in schizophrenia.