Development of an Inconsistent Responding Scale for the HEXACO Personality Inventory-Revised

Inconsistent or careless responding is a significant threat to the validity of self-reported personality data. Using archival samples of undergraduate and community participants, we developed an inconsistent responding scale using items that appear on both the 60- and 100-item versions of the HEXACO Personality Inventory-Revised-two widely used measures of the HEXACO model of personality trait structure. We identified pairs of correlated HEXACO items in Sample 1 and created a total inconsistent responding score by summing absolute differences between each item pair. The Brief Response Inconsistency Evaluation (BRIE) for the HEXACO effectively differentiated between genuine and randomly generated responses across samples. The BRIE also correlated as expected with other measures of careless responding and relevant personality traits (e.g., conscientiousness). Tentative cut scores for the BRIE that appear to provide a reasonable balance between sensitivity and specificity in Sample 1 were investigated. Future research should examine the BRIE with different populations and translations of the HEXACO inventories and further investigate the effectiveness of the recommended cut scores.