“Although we suffer from many of our ancestors' bad habits, they also evolved a motivational system that continues to reward us when we get it right. This is happiness.” SciencePsychologyNonfictionEvolutionary PsychologyBehavioral Psychology Book:The Social Leap: The New Evolutionary Science of Who We Are, Where We Come From, and What Makes Us Happy Source: The Social Leap: The New Evolutionary Science of Who We Are, Where We Come From, and What Makes Us Happy