A Footnote to East African History

This article is by a District Officer in Uganda, seconded duringthe War to administration in Somalia. He regards the entry asinteresting because it does not appear in Sir Reginald Coupland'sstandard East Africa and its Invaders.     

THE RELATIONSHIP BETWEEN SELF‐CONTROL AND LANGUAGE: EVIDENCE OF A SHARED ETIOLOGICAL PATHWAY*

Converging lines of research suggest that self‐control and language may be inextricably linked. No empirical research has ever examined this proposition, however. We address this gap in the literature by analyzing a sample of twin pairs from a nationally representative data set of children. The results revealed three broad findings. First, diminished language skills were predictive of low self‐control both cross‐sectionally and longitudinally. Second, the covariation between language and self‐control was linked to both genetic and environmental factors. Third, after controlling for genetic influences on self‐control, language skills were predictive of variation in individual levels of self‐control. The theoretical implications of these findings are discussed.