Personality and intelligence

A total of 233 subjects completed the Eysenck Personality Profiler (EPP), which measures the three primary (superfactor) traits, as well as 21 second-order factors; the Wonderlic Personnel Test, which is a brief measure of general cognitive ability/intelligence, and the Baddeley Reasoning Test (sentence verification intelligence test). Correlational and regressional analysis showed that scores on these highly inter-correlated intelligence measures (r = 0.62) were associated with stability (rather than neuroticism), introversion (rather than extraversion) and low psychoticism. The time taken to complete the computer administration EPP (response latency) was, along with stability, the most powerful predictor of intelligence test scores, suggesting that test-taking style is an important factor in terms of intelligence test scores.