Basil Bernstein’s theory of social control was the foundation for this pioneer study of the language mothers use to socialize their children, and how it affects their understanding of social values and social attitudes as they grow older. Originally published in 1973, Dr Cook-Gumperz’s research was particularly important in that it made use of analytical methods which could measure numerically the manifestations of the three kinds of control – imperative, positional, personal – that Bernstein distinguished. Using the coding grid developed by Professor Bernstein and herself, Jenny Cook-Gumperz demonstrates clearly the relations between maternal class, maternal approach to discipline and the child’s progress. By showing that the effects of early upbringing on the educational potential of children were measurable, this significant work in the comparatively new field of sociolinguistics would form a basis for the methodological approach to further practical investigations of a similar nature at the time. Today it can be read in its historical context.