Book excerpt: Originally published in 1969 this book analyzes the development of moral judgement in children and adolescents. Interviews were held with 360 children aged 7 to 17, with equal numbers of either sex. Original visual devices were planned to elicit judgements in moral areas known to be of universal significance, such as the value of life, cheating, stealing and lying. In addition, analyses of concepts of reciprocity, of the development of conscience and of specificity in moral judgement were derived from the tests. The book inlcudes a critical survey of previous work in this field and places the research in its wider philosophical, psychological and sociological context.