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Associations Of Personality Traits With The Capacity-Performance Discrepancy Of Functional Outcome In Patients With Schizophrenia

Authors Uchino T, Nemoto T, Yamaguchi T, Katagiri N, Tsujino N, Murakami Y, Tanaka K, Mizuno M

Received 7 June 2019

Accepted for publication 13 September 2019

Published 3 October 2019 Volume 2019:15 Pages 2869—2877


Checked for plagiarism Yes

Review by Single anonymous peer review

Peer reviewer comments 2

Editor who approved publication: Dr Taro Kishi

Takashi Uchino,1,2 Takahiro Nemoto,1 Taiju Yamaguchi,1 Naoyuki Katagiri,1 Naohisa Tsujino,1 Yoshitaka Murakami,3 Kuniaki Tanaka,2 Masafumi Mizuno1

1Department of Neuropsychiatry, Toho University Graduate School of Medicine, Tokyo 143-8540, Japan; 2Tokyo Adachi Hospital, Tokyo 121-0064, Japan; 3Department of Medical Statistics, Toho University School of Medicine, Tokyo 143-8540, Japan

Correspondence: Takahiro Nemoto
Department of Neuropsychiatry, Toho University Graduate School of Medicine, 5-21-16 Omori-Nishi, Ota-ku, Tokyo 143-8540, Japan
Tel +81 3 37624151
Fax +81 3 54715774
Email [email protected]

Objective: Functional capacity, which indicates one’s ability to perform everyday living tasks, contributes to real-world functional performance in patients with schizophrenia. However, functional capacity is sometimes not comparable with functional performance in clinical settings. We hypothesized that specific personality traits are related to this capacity-performance discrepancy of functional outcome.
Methods: The measures in this study were the UCSD Performance-based Skills Assessment Brief (UPSA-B) for functional capacity, the Social Functioning Scale (SFS) for functional performance, and the Temperament and Character Inventory-140 (TCI-140) for personality traits. A total of 94 stable outpatients with schizophrenia were divided into four groups based on combinations of their UPSA-B and SFS cut-off points, as follows: a high capacity and high performance (HH) group, a high capacity but low performance (HL) group, a low capacity but high performance (LH) group, and a low capacity and low performance (LL) group.
Results: There were no significant differences in demographics among the four groups. The LH group showed a significantly lower harm avoidance level than the LL group. The HL group showed a significantly lower persistence level than the HH group.
Conclusion: Lower harm avoidance may enhance functional performance, and lower persistence can limit functional performance, regardless of the primary levels of functional capacity in patients with schizophrenia. Novel and individualized psychosocial treatments considering the individual’s personality traits seem to be helpful for maximizing their functional performance in the community.

Keywords: functional capacity, performance-based assessment, real-world functioning, social functioning, Temperament and Character Inventory

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