Association between second to fourth digit ratio and personality among Indian men. Issue 2 (4th October 2019)

• Record Type: Journal Article
• Authors: Bagepally, Bhavani S.; Majumder, Joydeep; Kotadiya, Sanjay M.
• Is Part Of: American journal of human biology. Volume 32:Issue 2(2020)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2019-10-04
• Subjects: Human biology -- Periodicals; Physical anthropology -- Periodicals; Biologie humaine -- Périodiques; Anthropologie physique -- Périodiques; 612
• DOI: 10.1002/ajhb.23331
• Languages: English
• ISSNs: 1042-0533

Abstract

Abstract: Objectives: To examine the relationship between the personality domains with the second to fourth digit ratio (2d:4d); a prenatal testosterone exposure marker. Methods: The 2d:4d for both hands was measured for the Indian male subjects' (n = 994). Ten‐item personality inventory and displaced aggression questionnaire data were collected in a self‐reported proforma in this cross sectional study with a convenient sampling approach. Results: The personality traits, namely openness to new experiences, carelessness, and self‐discipline were significantly differed between lower‐half and higher‐half of 2d:4d by median split. The right hand 2d:4d was positively correlated with open to new experiences and negatively correlated with disorganization, carelessness, and revenge planning. The left hand 2d:4d was positively correlated with aggression. On binary logistic regression, openness was positively associated while carelessness was negatively associated with the right hand 2d:4d and self‐discipline trait was negatively associated with the left hand 2d:4d. Conclusion: This study affirmed the link between 2d:4d and domains of Big Five personality factors among Indian men and inverse relationship between 2d:4d and more "female" hands in the domains of disorganization, carelessness, and revenge planning even in men, emphasizing the effect of prenatal testosterone exposure on human personality.