The Left-Hand 2D:4D Ratio is Superior to the Right-Hand 2D:4D Ratio in Determining the Criminal Potential of Schizophrenia Patients

Le résumé fourni par la source

Background: No research has yet examined the potential association between criminal activity, schizophrenia, and the second-to-fourth digit ratio (2D:4D). Therefore, the present study aimed to evaluate if the 2D:4D differs between patients with schizophrenia with and without criminal activities. Methods: There were 143 male participants in the study: 50 healthy controls and 93 patients with schizophrenia (51 with and 42 without a criminal history). The participants completed the Barratt Impulsiveness Scale (BIS), the Buss-Perry Aggression Questionnaire (BPAQ), and sociodemographic forms. A digital caliper was used to measure finger lengths in order to compute 2D:4D ratios. The Positive and Negative Syndrome Scale (PANSS) was used to measure the severity of schizophrenia. Results: BPAQ, BIS, and PANSS scores were considerably higher in schizophrenia patients with a criminal background than in those without. Schizophrenia patients with a criminal background had considerably lower right and left 2D:4D ratios than controls. Schizophrenia patients with a criminal background had a significantly lower left 2D:4D ratio than those without. In people with schizophrenia, lower 2D:4D ratios in both hands-particularly the left-are linked to criminal behavior. Conclusion: The left 2D:4D ratio in a schizophrenia patients with criminal history was a significantly lower compared with those without. Therefore, in individuals with schizophrenia, the left 2D:4D ratio may serve as an early predictor of criminal behavior. This non-invasive anatomical measurement may have the potential to help forensic investigators identify those who are more likely to commit crimes, hence improving public safety.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.