Summary.Forty‐two “aggressive” and forty “withdrawing” children, selected by teachers out of a total school population of 1,002 children, are compared with each other and with a group of “exceptionally well‐adjusted children.” Comparisons are based on rating scales, Bristol Guides to Social Adjustment, a sociometric test, and a test of social adaptation.The results indicate that there are probably rather more problems of aggression than withdrawal but that the severity of the two behaviour patterns is comparable. These indications are confirmed by a limited one