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Updated: Jul 26, 2026

Handwriting Analysis Indicates Spontaneous Dyskinesias in Neuroleptic Naïve Adolescents at High Risk for Psychosis
Published on: November 21, 2013
Classic Text No. 136 'On the question of unitary psychosis', by Harry Marcuse (1926)
1Humboldt University of Berlin, Germany.
Abstract:
In his article 'On the question of unitary psychosis' (1926), Harry Marcuse (1876-1931) undertook a thought experiment in which he challenged clinical psychiatrists to entertain the possibility that the concept of unitary psychosis could be a useful diagnostic and nosological tool. Drawing on the psychology of Friedrich Jodl (1849-1914) and contemporary notions of energeticism, Marcuse proposed a non-empirical, 'analytic' method of overcoming growing dissatisfaction with Kraepelinian categories in the 1910s and 1920s.
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