[by Dean Smith] A 25-year study by sociologist Judith Wallerstein from the University of Berkley discovered the problems children encounter when their parents’ divorce often don’t show up until later — when the children are between 20 and 30 years of age. In her study entitled, The unexpected legacy of divorce: A 25 year landmark study, Wallerstein followed 100 children over a 25-years period commencing in 1971 when California liberalized its divorce legislation. Wallerstein stated the results surprised her. It was clear the delayed, negative impact of divorce on children was more far-reaching than first anticipated.