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Howard Berenbaum, PhD
Department of Psychology University of Illinois 603 E Daniel St Champaign, IL 61820

Arch Gen Psychiatry. 1991;48(3):280.

	Since this article does not have an abstract, we have provided the first 150 words of the full text PDF and any section headings.

To the Editor.—

Shenton et al¹ recently reported that the relatives of psychotic patients exhibited more thought disorder than normal control subjects. They also found that probands with higher thought disorder scores tended to have first-degree relatives with higher thought disorder scores. This was a well-conducted study, and the results are important for anyone who wishes to understand the phenomenology and etiology of schizophrenia.

My colleagues and I² have previously reported that we did not find evidence of genetic influence on formal thought disorder in speech samples taken from the Gottesman-Shields twin sample. In addition, with the exception of verbosity, we did not find evidence of nongenetic familial influence. Thus, there appears to be a discrepancy between the two studies. Shenton et al found evidence of familial resemblance; with the exception of verbosity, we did not. Shenton et al proposed that the reason for the discrepancy is that . . . [Full Text PDF of this Article]

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