Answers are grounded in this paper and cite their sources.
In a prospective, longitudinal study of high-risk offspring of schizophrenic mothers, of several dimensions of pre-morbid behaviour ‘peculiarity’ predicted subsequent schizophrenia or schizotypy. Peculiarity/eccentricity may represent a subtle marker of the schizophrenic genotype. ‘Pre-schizophrenics', as compared with ‘pre-schizotypes', were characterised by affective dyscontrol, reflected in less introverted and more disturbed behaviour.
No takes yet. Share an insight, caveat, or question.
Parnas et al. (1989) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: