The present study attempted to partially replicate and extend Valins and Ray’s studies ont he effects of false heart rate feedback on avoidance behavior. In the original studies, Ss saw slides of snakes while hearing eitehr meaningless sounds or bogus heart rate feedback indicating they wre not afraid of snakes. The present study replicated these conditions while including a no-treatment control and a group of subjects led to believe that snakes did affect them. Actual heart rate was monitored during the sessions and post-trreatment interviews conducted in order to more fully assess Ss’ reactions. Analyses failed to reveal significant between-group differences on any of the outcome indices of fear. This was attributed to the apparent failure of experimental Ss to re-evaluate their fear on the basis of their heart rate feedback.