Subliminal Self-Help Tapes and Academic Achievement: An Evaluation

Marketing claims of effectiveness in improving academic achievement through the use of commercially prepared subliminal audiotapes were investigated. Students enrolled in a career development class were randomly assigned to an active treatment group (n=25), an inactive treatment group (n=26), or a control group (n=22). Participants in the treatment group listened to tapes with subliminal affirmations masked by ocean waves. The inactive treatment group listened to placebo tapes with ocean waves but no subliminal messages. Dependent variables used were final examination scores from the class and current semester grade point average. No treatment differences on either dependent measure were found. The implications of these findings are discussed.