Establishing the Congruity amongst 2D:4D Ratio, Sex, and Socio-Behavioural Traits in Medical Students of Enugu State University of Science and Technology (ESUT)

Abstract

The second-to-fourth digit (2D:4D) ratio is a sexually dimorphic trait that has previously been reported to be associated with socio-behavioral characteristics. This study examined the relationship amongst 2D:4D ratio, sex, and socio-behavioral characteristics among undergraduate medical students at Enugu State University of Science and Technology. A quantitative descriptive cross-sectional study design was adopted and a sample size of 120 was calculated using the Taro-Yamane formula. Convenience sampling method was utilized and the majority exhibited positive socio-behavioral characteristics such as emotional control and stress management abilities. There was a significant difference in the personality traits (conscientiousness and openness) between the male and female population at P<0.050. However, there were no significant differences between the left and right digit ratio among the male and female population as P>0.050 in each case. Also, there was no significant difference in the level of executive functions (emotional control, inhibition control, and stress intolerance) among the male and female populations as P>0.050 in each case. There was a significant negative correlation between the right-hand 2D:4D digit ratio and level of conscientiousness among the population with (r=-0.196) at P<0.050. However, no significant association was found between personality traits and executive functions. There was no significant difference between the participants’ digit ratio and gender. However, the male right-hand 2D:4D digit ratio was significantly associated with conscientiousness among the population. Additionally, no significant correlation was found between the participant’s digit ratios and their executive functions (emotional control, inhibition control, and stress tolerance).