Motivation and its relationship to neurocognition, social cognition, and functional outcome in schizophrenia.
OBJECTIVE
A burgeoning area of research has focused on motivational deficits in schizophrenia, producing hypotheses about the role that motivation plays in the well-known relationship between neurocognition and functional outcome. However, little work has examined the role of motivation in more complex models of outcome that include social cognition, despite our increased understanding of the critical role of social cognition in community functioning in schizophrenia, and despite new basic science findings on the association between social cognitive and reward processing in neural systems in humans. Using path analysis, we directly contrasted whether motivation 1) causally influences known social cognitive deficits in schizophrenia, leading to poor outcome or 2) mediates the relationship between social cognitive deficits and outcome in this illness.


METHODS
Ninety one patients with schizophrenia or schizoaffective disorder completed interview-based measures of motivation and functional outcome as well as standardized measures of neurocognition and social cognition in a cross-sectional design.


RESULTS
In line with recent research, motivation appears to mediate the relationship between neurocognition, social cognition and functional outcome. A model with motivation as a causal factor resulted in poor fit indicating that motivation does not appear to precede neurocognition.


CONCLUSIONS
Findings in the present study indicate that motivation plays a significant and mediating role between neurocognition, social cognition, and functional outcome. Potential psychosocial treatment implications are discussed, especially those that emphasize social cognitive and motivational enhancement.
Department of Psychology, San Francisco State University, USA.
David E
DE
Gard
Melissa
M
Fisher
Coleman
C
Garrett
Alexander
A
Genevsky
Sophia
S
Vinogradov
D000328:Adult; D016009:Chi-Square Distribution; D003072:Cognition Disorders / Q000209:etiology*; D015928:Cognitive Behavioral Therapy / Q000379:methods; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009042:Motivation / Q000502:physiology*; D009483:Neuropsychological Tests; D017063:Outcome Assessment, Health Care; D011569:Psychiatric Status Rating Scales; D015203:Reproducibility of Results; D012559:Schizophrenia / Q000150:complications* / Q000534:rehabilitation; D012565:Schizophrenic Psychology; D012938:Social Perception