How do anticipated short-term costs affect the likelihood of engaging in an
activity that has long-term benefits. Five studies investigated the factor
s that determine (a) how anticipated short-term costs elicit self-control e
fforts and (b) how self-control efforts eventually diminish the influence o
f short-term costs on behavior. The studies manipulated short-term costs (e
.g., painful medical procedures) and assessed a variety of self-control str
ategies (e.g., self-imposed penalties for failure to undergo a test). The r
esults show that short-term costs elicit self control strategies for self r
ather than others, before rather than after behavior, when long-term benefi
ts are important rather than unimportant and when the costs are moderate ra
ther than extremely small or large. The results also show that the self-con
trol efforts help people act according to their long-term interests.