B2545 - Reaction time variability as a risk marker

B number: 
B2545
Principal applicant name: 
Richard J. Linscott | Department of Psychology, University of Otago (New Zealand)
Co-applicants: 
Mr Simon Wallace, Ms Michela Verwey, Ms Alannah Corson Keogh, Assoc. Prof. Martin Sellbom
Title of project: 
Reaction time variability as a risk marker
Proposal summary: 

Intra-individual variability (IIV), a measure of transient within-person fluctuations in behavioural performance, is thought to reflect the stability of cognitive processing. Increased IIV is commonly observed in persons diagnosed with schizophrenia. However, the clinical significance of increased IIV is unclear for several reasons. IIV is associated with ADHD and general cognitive impairment; IIV typically changes through the life-span, and characteristically exhibits a decrease from early childhood through to adolescence. The objective of this project is to assess the relationship between IIV and psychotic experiences in children and adolescents, and the extent to which these associations are independent of developmental stage, cognitive impairments, and other potential confounders.

Date proposal received: 
Monday, 28 September, 2015
Date proposal approved: 
Friday, 2 October, 2015
Keywords: 
Mental health - Psychology, Psychiatry, Cognition, Cognitive impairment, Mental health, Statistical methods, Cognition - cognitive function, Psychology - personality, Psychosis.