IQ decline and memory impairment in Japanese patients with chronic schizophrenia

Hiroaki Hori; Hiroko Noguchi; Ryota Hashimoto; Shigeo Okabe; Osamu Saitoh; Hiroshi Kunugi

doi:10.1016/j.psychres.2007.11.002

IQ decline and memory impairment in Japanese patients with chronic schizophrenia

Psychiatry Res. 2008 Mar 15;158(2):251-5. doi: 10.1016/j.psychres.2007.11.002. Epub 2008 Jan 28.

Authors

Hiroaki Hori¹, Hiroko Noguchi, Ryota Hashimoto, Shigeo Okabe, Osamu Saitoh, Hiroshi Kunugi

Affiliation

¹ Department of Mental Disorder Research, National Institute of Neuroscience, National Center of Neurology and Psychiatry, 4-1-1, Ogawahigashi, Kodaira, Tokyo, 187-8502, Japan. balius26@hotmail.com

PMID: 18222545
DOI: 10.1016/j.psychres.2007.11.002

Abstract

The extent of IQ decline due to the development of illness in patients with chronic schizophrenia and the degree of memory impairment relative to such IQ decline still remain unclear. Our results suggest that schizophrenia patients experience marked IQ decline due to the development of illness and their wide-ranging memory impairments are even more severe than the IQ decline.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Adult
Affect
Asian People / ethnology*
Chronic Disease
Cognition Disorders / diagnosis*
Cognition Disorders / epidemiology
Cognition Disorders / ethnology*
Diagnostic and Statistical Manual of Mental Disorders
Female
Humans
Intelligence
Male
Memory Disorders / diagnosis*
Memory Disorders / epidemiology
Memory Disorders / ethnology*
Reading
Schizophrenia / epidemiology
Schizophrenia / ethnology*
Severity of Illness Index
Surveys and Questionnaires
Wechsler Scales