The Marshmallow Test Is Bunk

The long-held belief that delaying gratification is a key predictor of future success is being challenged by new research. For decades, the "marshmallow test," popularized by psychologist Walter Mischel in the late 1960s and early 1970s, suggested that children who could resist an immediate reward (a marshmallow) for a larger reward later were more likely to achieve success in life. This concept became deeply ingrained in popular psychology and economic theory, influencing parenting advice and policy decisions. However, a 2018 study by Tyler Watts, Greg Duncan, and Thomas Weisner re-examined Mischel's original data and found that socioeconomic factors, rather than innate self-control, were more significant predictors of later life outcomes. Their analysis indicated that children from lower socioeconomic backgrounds performed worse on the marshmallow test, suggesting that the ability to delay gratification might be influenced by environmental conditions and trust, rather than solely by individual willpower. This re-evaluation suggests that the emphasis on delayed gratification as a universal marker of success may be flawed, and that societal factors play a more substantial role.