J Korean Soc Biol Psychiatry.  2002 Dec;9(2):112-119.

Speech Perception Ability of Schizophrenics: A Comparative Study with Depressives & Normal Control

• Chung YC
• Lee SJ
• Lee SH

Abstract

OBJECT: This study was to investigate the difference of speech perception ability in schizophrenic patients, and depression patients in order to explore trait-dependent speech perception ability of each disorder.
METHODS
The speech perception ability was assessed with masked speech tracking test(MST) in schizophrenic patients(N=31), depression patients(N=25), and normal controls(N=21). The continuous performance test(CPT) and sentence repetition test(SRT) were also used for assessment of attention and working memory.
RESULTS
The schizophrenic patients showed significant impaired MST performance, compared with depressive patients and normal controls. The performances of CPT and SRT were also more impaired in schizophrenic patients. The difference of MST performances between two patient group was cancelled out after consideration of differences in CPT & SRT performances.
CONCLUSIONS
These results imply that schizophrenic patients have the impaired speech perception ability compared with depressive patients and normal controls. But speech perception ability was significantly influenced with CPT and SRT. For evaluation of pure speech perception ability, the more elaborate controlled study that excluded factors such as attention, working memory and intelligence is needed.

MeSH Terms

Depression
Humans
Intelligence
Masks
Memory, Short-Term
Schizophrenia
Speech Perception*