Abstract
Electric shock and time out were compared as punishers in the squirrel monkey. At the parameters investigated, both suppressd responding to about the same degree. Scheduling punishment intermittently or administering pentobarbital reduced the effectiveness of both punishers. The effects of the punishers were different in that responding suppressed by shock recovered more within a session than responding suppressed by time out. Responding was suppressed after some shock-punishment components, but less often after the time-out-punishment components. The similarities of the 2 punishers were more striking than the differences.