Authors

Dr. DeWayne Derryberry

Idaho State University

Objective

Determine whether subliminal messages were effective in increasing math test scores, and if so, by how much.

Background

An experiment was completed to assess whether there is evidence that subliminal messages (messages we are exposed to but may not be aware of) could help raise scores on a math skills assessment. Eighteen students who had failed a math skills test were randomly assigned to receive daily either positive subliminal messages (“Each day I am getting better at math”) or neutral subliminal messages (“People are walking on the street”). The students were participating in a summer program designed to raise their math skills. At the end of the program the students were re-assessed.

The Task

Determine whether the subliminal messages were effective, and if so, by how much.


Use the links below to read the full case study and download the data files