Digit ratio, emotional intelligence and parenting styles predict female aggression

•Identified associations of 2D:4D, EI, and parenting to female aggression.•Left hand 2D:4D, EI, and parental authoritarianism emerged as most robust model.•EI related negatively to aggression; 2D:4D and authoritarianism related positively.•Biological and developmental accounts together describe antecedents of aggression.

The contributions of digit ratio (2D:4D), emotional intelligence (EI) and parenting styles to social aggression were examined. Females (n = 215 emerging adults) completed 5 aggression measures, an EI measure, 2 parenting measures, and had their hands measured. Aggression correlated with each of the predictors. Left hand 2D:4D, EI, and parental authoritarianism resulted in the most robust model for predicting aggression. Implications are discussed.