Eye-hand preference in schizophrenia: sex differences and significance for hand function.
Hand preference and eye dominance were investigated in 73 (30 women, 43 men) schizophrenic patients and 71 (30 women, 41 men) healthy controls. There were significantly more schizophrenic patients and normal controls who were significantly right-hand dominant. However, schizophrenic patients showed a significant excess of left-eye dominance relative to controls (65.8% vs 29.6%; Odds Ratio= 4.75, p< .001). In addition, female schizophrenic patients showed a higher rate of nonright (either left or inconsistent) eye dominance (80%) than male schizophrenic patients (55.8%) and controls (33.3%). Analysis of hand performance on the Purdue Pegboard Test indicated that schizophrenic patients who showed crossed eye-hand dominance scored higher than did patients without crossed eye-hand dominance.
Department of Psychiatry, National Cheng Kung University Medical College and Hospital, Tainan, Taiwan.
Yi-Chia
YC
Liu
Yen Kuang
YK
Yang
I Hui
IH
Lee
Keh-Chung
KC
Lin
Keith J
KJ
Jeffries
Li-Ching
LC
Lee
D000328:Adult; D001921:Brain / Q000503:physiopathology*; D005133:Eye Movements / Q000502:physiology*; D005260:Female; D007839:Functional Laterality / Q000502:physiology*; D006225:Hand / Q000502:physiology*; D006801:Humans; D008297:Male; D012559:Schizophrenia / Q000503:physiopathology*; D012737:Sex Factors; D011795:Surveys and Questionnaires