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Front Psychiatry. 2019 May 21;10:356. doi: 10.3389/fpsyt.2019.00356. eCollection 2019.

Global and Specific Profiles of Executive Functioning in Prodromal and Early Psychosis.

Hwang WJ1, Lee TY2, Shin WG3, Kim M2,4, Kim J2, Lee J2,4, Kwon JS1,2,4,3.

Author information

1
Department of Brain and Cognitive Sciences, College of Natural Science, Seoul National University, Seoul, South Korea.
2
Department of Psychiatry, College of Medicine, Seoul National University, Seoul, South Korea.
3
Institute of Human Behavioral Medicine, SNU-MRC, Seoul, South Korea.
4
Department of Neuropsychiatry, Seoul National University Hospital, Seoul, South Korea.

Abstract

Objective: Numerous reports on neurocognitive functioning deficits in individuals at clinical high risk (CHR) and first-episode psychosis (FEP) patients suggest particular deficits in executive functioning (EF). However, to date, most of the studies have administered a single or a few EF tests to participants, and few investigations have examined the different components of EF to identify specific subdomains of relative strength and weakness. Method: Forty CHR subjects, 85 FEP patients, and 85 healthy controls (HCs) were assessed with a neuropsychological battery to elucidate the profiles of EF in the subdomains of shift, attention, fluency, and planning. Results: In the subdomains of shift, attention, and fluency, CHR individuals and FEP patients showed deficits compared to HC. The post hoc analysis revealed that CHR individuals had comparable attention shifting and phonemic fluency compared to FEP. CHR showed intermediate deficits between FEP and HCs in spatial working memory and semantic fluency, and the largest effect size was observed in semantic fluency both for CHR and FEP. Conclusion: Overall, the findings of this study, in addition to providing detailed profiles of EF in prodromal and early psychosis patients, highlight the informative value of the specific subdomains of semantic fluency and spatial working memory.

KEYWORDS:

clinical high risk; executive function; first-episode psychosis; neurocognition; psychosis; semantic fluency; spatial working memory

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