Psychiatry investigation

Korean Neuropsychiatric Association (대한신경정신의학회)
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Relationship of Working Memory, Processing Speed, and Fluid Reasoning in Psychiatric Patients

  • Kim, Se-Jin (Department of Psychiatry, Hallym University Sacred Heart Hospital, Hallym University College of Medicine) ;
  • Park, Eun Hee (Department of Psychiatry, Hallym University Sacred Heart Hospital, Hallym University College of Medicine)
  • Received : 2018.07.06
  • Accepted : 2018.10.10
  • Published : 2018.12.31
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Abstract

Objective The present study aimed to investigate relationship among cognitive factors (working memory and processing speed) and fluid reasoning (Gf) in psychiatric patients using a standardized clinical tool. Methods We included the responses of 115 heterogeneous patients who were diagnosed with the MINI-Plus 5.0 and WAIS-IV/WMS-IV was administered. For our analysis, structured equation modeling (SEM) was conducted to evaluate which cognitive variables are closely related to the Gf. Results The results showed that the visual working memory was the strongest predictor of the Gf compared to other cognitive factors. Conclusion Processing speed was capable of predicting the Gf, when visual working memory was controlled. The inter-relationship among the Gf and other cognitive factors and its clinical implications were further discussed.

Keywords

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