Experimenters at the University of Rochester manipulated the reliability of a child's environment by promising to bring the child a special art supply set, then either keeping or breaking the promise. What was the impact of this manipulation on a subsequent delay of gratification task?

In simple words, The exploitation of consistency influenced quite well how frequently children became able to halt fulfillment and how longer the fulfillment could be postponed.

By contrast, atmosphere manipulation doubled waiting periods in the stable situation and cut in half the period in the inaccurate scenario. Earlier studies which examined the impact of learning waiting techniques to children reported fewer results, the authors claim.