Psychotic Experiences and Overhasty Inferences Are Related to Maladaptive Learning.

ABSTRACT: Theoretical accounts suggest that an alteration in the brain's learning mechanisms might lead to overhasty inferences, resulting in psychotic symptoms. Here, we sought to elucidate the suggested link between maladaptive learning and psychosis. Ninety-eight healthy individuals with varying degrees of delusional ideation and hallucinatory experiences performed a probabilistic reasoning task that allowed us to quantify overhasty inferences. Replicating previous results, we found a relationship between psychotic experiences and overhasty inferences during probabilistic reasoning. Computational modelling revealed that the behavioral data was best explained by a novel computational learning model that formalizes the adaptiveness of learning by a non-linear distortion of prediction error processi

SUBMITTER: Stuke H 

PROVIDER: S-EPMC5249047 | biostudies-literature | 2017 Jan

REPOSITORIES: biostudies-literature