To investigate the correlation between personality and student use of individualized instruction, 135 dental students were allowed to choose instructional materials. Forty-five accessed both computer and slide/tape programs, 65 used materials in only one format, and 25 used no materials. An analysis of course performance, academic predicators, personality variables and materials selection behavior indicated that aggressiveness and final grade were positively correlated for students who did not use the materials, while these variables were negatively correlated for those who did. Use of materials were also positively correlated to playfulness and curiosity. (SK)