Openness to experience, general intelligence and crystallized intelligence: A methodological extension

Using a semi-partial correlation approach, Gignac, Stough, and Loukomitis [Gignac, G. E., Stough, C., & Loukomitis, S. (2004). Openness, intelligence, and self-report intelligence. Intelligence, 32, 133-143] examined the relationship between Openness and 'g' and residualized scores from Vocabulary and Information as estimates of crystallized intelligence. To help overcome any ambiguity in the interpretation of the results, a more sophisticated analysis based on nested factor modeling (SEM) is demonstrated to support the findings reported in Gignac et al. Researchers are encouraged to make use of the nested factor modeling approach, rather than the procedure endorsed in Gignac et al., because of advantages relevant to modeling superior estimates of intelligence factors, as well the means of evaluating model fit afforded by SEM.