AP PSYCHOLOGY

Detailed explanation-1: -The study was longitudinal as it was conducted over a number of years with the same participants. It was also a quasi-experiment as the participants naturally fell into either high-delaying or low-delaying groups.

Detailed explanation-2: -Casey’s study is a follow-up study to the Marshmallow test. The aim of which was to build on previous research and assess whether the cookie task performed in childhood could predict the capacity to self-control in adulthood.

Detailed explanation-3: -Casey concluded that, resistance to temptation as measured originally by the delay of gratification (cookie) task as a child, is a relatively stable (consistent) individual difference that predicts reliable biases in frontostriatal circuitries that integrate motivational and control processes.