According to paul's article, the new marshmallow test, what exactly is the marshmallow test?

Based on the long term study of the marshmallow test, the kids who could interrupt gratification with marshmallow revolved out to be more successful down the road by a variety of measures than those who could not in the marshmallow test from the 1960’s. Media disruptions are the new marshmallows, as an example the students were sent text messages as they viewed video then those who answered the text message right away scored much worse on a test about the video content that they watched. Those students who can learn to sweep away the tone call of the smartphone are likely to perform better than their peers.

there is no passage.

a, overstatement is the answer