A landmark study in the late 1960s and early 1970s used marshmallows and cookies to assess the ability of preschool children to delay gratification. A newly published follow-up revisits some of the same children, now adults.
A landmark study in the late 1960s and early 1970s used marshmallows and cookies to assess the ability of preschool children to delay gratification. A newly published follow-up revisits some of the same children, now adults.