I read a surprising study the other day that showed that just a little bit of working memory training using computer games (tests, really) had a strong effect on subjects' "delay dscounting," which is implicated in the marshmallow test (see Executive Function). Two of the four memory training games they had subjects use were similar to Movie Munchies; the others had to do with being presented with lists of words and then choosing them from a list
Mitch Moldofsky is founder of the Thinking Skills Club, a computer game club that helps develop cognitive functioning for kids. He hold a B.Sc. in Cognitive Science and Psychology from the University of Toronto.