You are running a predictive validity study, and so you give applicants your new measure as well as the ones you previously used for selection. Because of the nature of the study, you only use the scores from the previous measure to select, but this leads to most of the low scores on the new measure not being present in the sample when the criterion is measured. This is an example of ______.
a) homoscedasticity
b) range enhancement
c) direct range restriction
d) indirect range restriction