The influence of hallucination proneness and social threat on time perception

Abstract

Introduction.

Individuals with schizophrenia frequently report disturbances in time perception, but the precise nature of such deficits and their relation to specific symptoms of the disorder is unclear. We sought to determine the relationship between hallucination proneness and time perception in healthy individuals, and whether this relationship is moderated by hypervigilance to threat-related stimuli.

Methods.

206 participants completed the Revised Launay-Slade Hallucination Scale (LSHS-R) and a time reproduction task in which, on each trial, participants viewed a face (happy, angry, neutral, or fearful) for between 1 and 5 s and then reproduced the time period with a spacebar press.

Results.

High LSHS-R scores were associated with longer time estimates, but only during exposure to angry faces. A factor analysis of LSHS-R scores identified a factor comprising items related to reality monitoring, and this factor was most associated with the longer time estimates.

Conclusions.

During exposure to potential threat in the environment, duration estimates increase with hallucination proneness. The experience of feeling exposed to threat for longer may serve to maintain a state of hypervigilance which has been shown previously to be associated with positive symptoms of schizophrenia.

Keywords:

• Hypervigilance
• Internal clock
• Psychosis
• Reality monitoring
• Schizophrenia
• Schizotypy

We are grateful to Nim Tottenham for allowing us to use the NimStim Face Stimulus Set. Thank you to Dr Adrian Hemmings for insightful comments on a previous draft of the manuscript. We acknowledge that the first author was supported by a studentship from the Economic and Social Research Council.

We are grateful to Nim Tottenham for allowing us to use the NimStim Face Stimulus Set. Thank you to Dr Adrian Hemmings for insightful comments on a previous draft of the manuscript. We acknowledge that the first author was supported by a studentship from the Economic and Social Research Council.