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Random number generation by normal, alcoholic and schizophrenic subjects

Published online by Cambridge University Press:  09 July 2009

Stewart Rosenberg ,
Neville Weber ,
Marc-Antoine Crocq ,
Fabrice Duval  and
Jean-Paul Macher
Stewart Rosenberg*
Affiliation:
Section VIII, CHS Rouffach, France; Department of Mathematical Statistics, University of Sydney, Australia
Neville Weber
Affiliation:
Section VIII, CHS Rouffach, France; Department of Mathematical Statistics, University of Sydney, Australia
Marc-Antoine Crocq
Affiliation:
Section VIII, CHS Rouffach, France; Department of Mathematical Statistics, University of Sydney, Australia
Fabrice Duval
Affiliation:
Section VIII, CHS Rouffach, France; Department of Mathematical Statistics, University of Sydney, Australia
Jean-Paul Macher
Affiliation:
Section VIII, CHS Rouffach, France; Department of Mathematical Statistics, University of Sydney, Australia
*
1Address for correspondence: Dr S. Rosenberg, Morisset Hospital, Morisset, NSW 2264, Australia
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Synopsis

Controls (N = 45), schizophrenics (N = 20) and alcoholics (N =23) were asked to choose at random a number between 1 and 10, 100 times. The correlation matrices of five different randomization indices were used to study within group variation; these matrices were similar for the normal and alcoholic groups, but very different for the schizophrenic group. The differences between the three groups were studied by canonical analysis and, in terms of the canonical variables, the mean performance of the normal group is clearly discriminated from that of the alcoholic and schizophrenic subjects.

Type
Orginal Articles
Information
Psychological Medicine , Volume 20 , Issue 4 , November 1990 , pp. 953 - 960
Copyright
Copyright © Cambridge University Press 1990

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References

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