Several researchers have claimed that negative outcomes produce greater regret when they result from actions rather than from failures to act (Gleicher et al,, 1990; Kahneman & Tversky, 1982; Landman, 1987), We investigated this claim by asking participants to write descriptions of strongly regretted events in their own lives and to rate the intensity of the regrets. Participants reported more inaction than action regrets, and, contrary to prior research findings, regrets produced by actions and inactions were equally intense. We conjecture that many factors that affect the content of real-life regrets are eliminated in studies of hypothetical regret. In real life, actions and inactions do not generally produce the same outcomes. Furthermore, actions and inactions may differ in how easily one can anticipate the potential for harm. Specifically, it is plausible that people control their actions to avoid potential regrets, leaving themselves vulnerable to regrets from inactions. (C) 1999 Academic Press.