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.
Liu
Yi-Chia
YC
Department of Psychiatry, National Cheng Kung University Medical College and Hospital, Tainan, Taiwan.
Yang
Yen Kuang
YK
Lee
I Hui
IH
Lin
Keh-Chung
KC
Jeffries
Keith J
KJ
Lee
Li-Ching
LC
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