The measure of cognitive complexity (construct differentiation) based on the standard two‐peer version of Crockett's Role Category Questionnaire (RCQ) was found to have high four‐week test‐retest reliability under conditions of either strict enforcement of a time limit for completion of the RCQ ("timed” version) or no such enforcement ("untimed"). Additionally, for subjects who completed both a timed and an untimed version at a four‐week interval (with order varied), the correlation of timed and untimed differentiation scores was high.
O'Keefe, D. J., Shepherd, G. J., & Streeter, T. (1982). Role Category Questionnaire measures of cognitive complexity: Reliability and comparability of alternative forms. Central States Speech Journal, 33, 333-338. https://doi.org/10.1080/10510978209388436