Nasrallah H A, McCalley-Whitters M
Br J Psychiatry. 1982 May;140:521-2. doi: 10.1192/bjp.140.5.521.
A handedness test, administered to 88 manic male patients and 86 male control subjects, showed no difference between the two groups. The result suggest that unlike schizophrenia, mania is not associated with increased left and/or mixed-handedness.