A University of Washington study finds that 18-month-old toddlers conduct a form of cost-benefit analysis, making choices based on how much effort they want to expend, or on whether they like the people involved.


A University of Washington study finds that 18-month-old toddlers conduct a form of cost-benefit analysis, making choices based on how much effort they want to expend, or on whether they like the people involved.

This video acquaints the viewer with the puppets and introduces the idea of which is socially dominant. The charismatic colleague, the natural leader, the life of the party – all are personal qualities that adults recognize instinctively. These socially dominant types, according to repeated studies, also tend to accomplish and earn more, from accolades and material wealth to friends and romantic partners. This social hierarchy may be so naturally ingrained, University of Washington researchers say, that toddlers as young…