The predictive processing framework conceptualizes perception as co-constructed by sensory information and priors. These priors arise from different sources including long-term and short-term perceptual history. According to predictive processing, psychosis can be explained as a reduced weighting of priors relative to sensory information. This study investigated how short-term priors from different sources are used in perceptual decision-making and how psychosis proneness (PP) modulates the use of these priors.Across two online experiments, 101 healthy participants completed an auditory perceptual decision-making task under varying levels of perceptual uncertainty. We assessed the effect of two sources of short-term priors, choice history and probabilistic cues, on perceptual choices. PP was assessed using two questionnaires.In experiment 1, logistic regression revealed that choices at each trial t were biased both by preceding choices at t-1 and probabilistic cues presented at t. The impact of cue on perceptual choices was negatively associated with PP, while no such modulation was found for choice history. Experiment 2 was identical to experiment 1, except that no cues were presented. Perceptual choices at t were again biased by choices at t-1 and now showed a negative association with PP. The cue in experiment 1 may thus have overruled the modulation of choice history bias by PP. In both experiments, we found increased weighting of the stimulus information with higher PP.To conclude, PP modulates the impact of short-term priors in perceptual decision-making, indicating a shift of perceptual inference towards sensory information and away from perceptual priors in psychosis-prone individuals.