To the Editor: As a clinician and researcher who is interested in the effects of gambling in later life, I wish to comment on the recent article by Rani A. Desai, Ph.D., M.P.H., et al. (1). The authors examined data collected in 1998 by the National Opinion Research Center. The instrument used was the Gambling Impact and Behavior Study Survey, which is designed to measure gambling behavior and the impact of gambling behavior on selected psychosocial issues. For example, questions on this instrument refer to the number of times an individual has gambled at a casino, how far the person traveled to the casino, how much time was spent there, the type of game played, the amount of money spent, and the amount of money either lost or won at the end of the day. Gambling in lotteries and small business settings and pari-mutuel betting are assessed with similar questions. There are also questions that would indicate problem gambling behavior, such as did you gamble more than you intended? Have you tried to stop, cut down, or control gambling? And are there problems in relationships because of gambling? To further assess the impact, there are questions about legal issues, such as were arguments emotionally harmful? Did an argument ever become physical? And have you ever been arrested?