Researches on teachers' ratings of their pupils have indicated what appear to be two main dimensions of personality. Measurements of anxiety and of introversion obtained from questionnaires also suggest two dimensions, apparently similar in nature. Accordingly an attempt was made to relate the two sets of dimensions by using eight groups of secondary school pupils, each consisting of approximately 112 boys or girls in the first and fourth years of secondary modern and grammar schools. Ratings for personality, questionnaire scales, scores for tests of intelligence and attainment, and assessments of social conditions furnished 28 variables for fourth year pupils and 30 for first year pupils. A matrix of combined correlations was calculated for each of the eight groups. This was analysed by the method of principal components, and the axes were rotated in accordance with the Varimax criterion. Three factors were extracted which were comparable in each of the groups. The nature of the factors is discussed, and two possible interpretations are suggested.