I developed a 9-item implicit personality theory (IPT) scale to demons
trate the naive, lay beliefs students have regarding the construct of
personality. Students (N = 162) completed the IPT Scale during Week 1
and Week 16 in a Personality Theories course. Analysis of Week 1 respo
nses showed definite student preferences for certain IPTs. Factor anal
ysis of these data also revealed 4 relatively unique factors that acco
unted for 65.2% of the variance. By Week 16, students' preference for
a particular explicit theory of personality related to their responses
on the IPT scale. Comparison of Week 1 and Week 16 scores indicated t
hat individual IPTs were fairly resistant to change. Pedagogically, th
ese results demonstrate the role of IPTs in the construction and valid
ation of explicit personality theories. Also, class discussion on topi
cs such as individual differences, attribution theory, self-serving bi
as, and personal constructs are enhanced when students' IPTs are made
explicit.