The British Journal of Psychiatry 156: 228-230 (1990)
© 1990 The Royal College of Psychiatrists
Handedness and epileptic schizophrenia
F Oyebode and K Davison
John Conolly Hospital, Birmingham.
Thirty-two epileptic patients with RDC diagnoses of schizophrenia were
tested for handedness on the Annett Handedness Schedule, and handedness was
assigned on the basis of Annett-Maudsley criteria. They were compared with
three other groups of patients. Five (15.6%) of the epileptic schizophrenic
patients were mixed or left handed. The prevalence of mixed and left
handedness did not differ between the samples studied. However, there was a
significant reduction of mixed and left handedness in male epileptics with
schizophrenia. Mixed or left handedness in male epileptics appears to be
protective against the development of psychiatric illness in general.