IQ tests and achievement tests do not capture non-cognitive skills — personality traits, goals, character and motivations that are valued in the labour market, in school and elsewhere. For many outcomes, their predictive power rivals or exceeds that of cognitive skills. Skills are stable...

Improving cognitive function and reducing stress may yield important benefits to individuals' health and to society. We conduct an experiment involving a three-month within-firm training program based on the principles of mindfulness and positive psychology at three large companies. We find an...