The Iowa Lottery is using a national expert from Harvard in a new public service announcement on gambling addiction. The lottery normally tries to get people to play its games, but spokesman Joe Hrdlicka (heard-lick-uh) says there is a segment of players who need help. Hrdlicka says producing the announcement doesn’t conflict with the lottery’s slogan — “You can’t win if you don’t play”. The P-S-A features Dr. Howard Shaffer of the Harvard Medical School. Shaffer discusses the study of compulsive behavior. The end of the announcement advises anyone who may think they have a gambling problem to call the Iowa Gambling Treatment Program’s 800 number. The new public service announcements are being distributed to television stations in the state.