A year in the college life: Evidence for the social investment hypothesis via trait self-control and alcohol consumption

The present study examined 12-month prospective relations among trait self-control, subjective role investment, and alcohol consumption in a sample of university students (N = 129). Using neo-socioanalytic theory and the social investment hypothesis as guiding frameworks, it was expected that greater initial role investment would predict greater self-control and less alcohol consumption at follow-up. Path analyses showed higher initial levels of subjective college student role investment predicted greater subsequent self-control and lower drinking amounts, controlling for initial standing on self-control and alcohol consumption. Greater initial trait self-control also predicted subsequent lower alcohol consumption. The discussion emphasizes the importance of incorporating subjective role investment, in addition to nominal role participation, in developmental accounts of personality traits, social identity, and behavior.

► Greater initial student role investment predicted greater subsequent self-control.
► Greater initial student role investment predicted lower subsequent drinking.
► Greater initial trait self-control predicted lower subsequent drinking.
► Results show developmental importance of within-role individual differences.