Related Experiment Video
Updated: Aug 10, 2026

Handwriting Analysis Indicates Spontaneous Dyskinesias in Neuroleptic Naïve Adolescents at High Risk for Psychosis
Published on: November 21, 2013
The relationship of paranoid states to schizophrenia
Abstract:
The author interviewed relatives of 32 paranoid patients, 32 matched depressed patients, and 15 schizophrenic patients regarding family history. Two (1.3%) of the relatives of paranoid patients and one (0.6%) of the relatives of depressed patients had possible paranoid states. Significantly more relatives of schizophrenic patients than relatives of paranoid or depressed patients had schizophrenia, but the rates were similar among relatives of paranoid and depressed patients. The author concludes that there is little evidence of familial occurrence of paranoid states and no evidence that paranoid states are familially related to schizophrenia.
More Related Videos
12:00Investigating the Effects of Antipsychotics and Schizotypy on the N400 Using Event-Related Potentials and Semantic Categorization
Published on: November 19, 2014
07:31Implementation of a Real-Time Psychosis Risk Detection and Alerting System Based on Electronic Health Records using CogStack
Published on: May 15, 2020
Related Concept Videos
Psychosis: Pathophysiology of Schizophrenia and Other Psychotic Disorders
Researchers have identified genetic factors that increase susceptibility to schizophrenia, underscoring the intricate interplay between genetics and environment in disease development. At the core of schizophrenia's pathophysiology is excessive dopaminergic neurotransmission within the...
Schizophrenia
Positive Symptoms Schizophrenia: Hallucinations and Delusions
Hallucinations
Hallucinations in...
Biological Causes of Schizophrenia
Genetic Factors in Schizophrenia
The genetic basis of schizophrenia is strongly supported by family and twin studies.
Psychological and Sociocultural Causes of Schizophrenia
Personality Disorders: Paranoid and Schizoid
Paranoid Personality Disorder
Paranoid personality disorder is...