Gene and more friendships correlate with social liberalism

Science Daily - Researchers find a 'liberal gene'

This was a study that collected data from a longitudinal project. Scientists found that socially liberal political views correlated with a specific gene variant DRD4 and an "active social life" during adolescence. The gene has shown correlations with human behavior that seeks or accepts novelty, which supposedly is a behavior that has been correlated with social liberalism. The hypothesis is that having a more-than-average number of friends in conjunction with this gene creates a propensity to explore a diversity of experience and gain variegated interpersonal knowledge during adolescence that leads people to be more accepting of others and their lives. The results were found to hold regardless of sex, age, race, or "culture".