“The study starts by distinguishing between two terms: there’s rationality, where you focus on maximizing the chance of getting what you want, and there’s reasonableness, where you strike a balance between what you want and social norms.

Although we might sometimes use rational and reasonable interchangeably, the study shows that people generally associate the former with the cold hard logic of self-interest and the latter with socially conscious traits like kindness or cooperativeness.”