Abstract
The study represents an attempt to cross-validate an American experiment in the discrimination of aggressive from nonaggressive behavior on the basis of the Acting Out Score and the Withdrawal Score of the Hand Test. The subjects were 66 undifferentiated schizophrenics in an English state mental hospital. They were rated as aggressive (A) or nonaggressive (NA) according to certain definite criteria. The distribution of numbers, sexes, and ages approximated closely to those in the earlier study. Whereas the results of the American experiment successfully discriminated between aggressive and nonaggressive schizophrenics, the results of the present study were notably similar for both A and NA groups.

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