The Marshmallow Test: What Does It Really Measure? - The Atlantic
▻https://www.theatlantic.com/family/archive/2018/06/marshmallow-test/561779
the new study finds limited support for the idea that being able to delay gratification leads to better outcomes. Instead, it suggests that the capacity to hold out for a second marshmallow is shaped in large part by a child’s social and economic background—and, in turn, that that background, not the ability to delay gratification, is what’s behind kids’ long-term success.