The self-assessment of the Cattell-Horn-Carroll broad stratum abilities

Over 300 adults completed a questionnaire that asked them to estimate their “overall” intelligence, as well as their scores on the 10 broad abilities specified by the Cattell-Horn-Carroll (CHC) theory of cognitive abilities. They also completed a short measure of the Big Five, as well as six questions on their beliefs about intelligence and intelligence testing. There were, as predicted, sex differences on the self-estimate of overall intelligence as well as seven of the ten CHC abilities. The abilities factored into two dimensions. A regression showed that respondents think only five of the ten abilities are related to overall IQ (g). There were replicated sex differences in beliefs about intelligence testing. Implications and limitations of these results are considered.