TheMarshmallowExperiment was developed bypsychologistWalterMischelinthe 60s and 70s, when he was a professor atStanfordUniversity.
WalterMischel hadtested the abilityofpreschoolers(with an average age of 4 yearsand a half) to resistthe temptation ofeating amarshmallow, they could eat it right away or wait 15 minutes until the experimenter returned. If they waited, they would get an extra marshmallow. A child outof threewas able toresistand wait thetimesetto geta secondmarshmallow. Here’san experiment conductedafterthemodelof the 60s: