This research tested the hypothesis that prudence and altruism, in situations involving future desires, follow a similar developmental course between the ages of 3 and 5 years. Using a modified delay of gratification paradigm, 3- to 5-year-olds were tested on their ability to forgo a current opportunity to obtain some stickers in order to gratify their own future desires — or the current or future desires of a research assistant. Results showed that in choices involving current desires, altruistic behavior was (...) unrelated to age. However, prudence and altruism involving future situations were correlated with one another and with age. Children under 4 years of age demonstrated significantly less futureoriented prudence than the older children (F(1,49) = 15.75; p<.001) and significantly less altruism involving future situations (F(1,49) = 33.24; p<.001). The data for the 3-year-olds, but not for the older children, also showed agepartialled correlations between the two future-oriented choice situations. These results suggest that between 3 and 4 years, children acquire the ability to deal with future-oriented situations through the development of some common mechanism which affects both future-oriented prudence and altruism. (shrink)