Vidhu Moran and Dalip Kumar report in the British Journal of Psychology (August, 1976) the results of a study on the relationship between introvertism and extrovertism and intelligence in an article...

Vidhu Moran and Dalip Kumar report in the British Journal of

Psychology (August, 1976) the results of a study on the relationship between introvertism and extrovertism and intelligence in

an article entitled "Qualitative Analysis of the Performance of

Introverts and Extroverts on Standard Progressive Matrices."

The number of correct responses (of 12 possible) on the most

difficult tests are summarized below:

Test the hypothesis that there is no difference between the two

groups using a = 0.05.