Experts

Carol Dweck told 400 students they were ‘smart’ and watched their performance collapse within a year

Dweck's 1998 study proved praising intelligence kills motivation. Here's what the research…

Walter Mischel offered 600 children a marshmallow and the ones who waited scored 210 points higher on the SAT a decade later

The marshmallow test is the most famous delayed gratification study ever run.…

Robert Cialdini went undercover as a car salesman, fundraiser, and telemarketer to study why people say yes

Cialdini's six principles of influence from three years of fieldwork show up…