The three are closely related. Existential studies provide insight into both the forms of delinquency and its causal matrix, and causal studies suggest both the relevant context and lawful regularities in the nature of delinquency. Moreover, using the concepts of domain and generality, one sees that strain 'theory' is not a theory but a causal paradigm and that it is not competitive with control theory. One also finds that social control theory and cultural deviance are parallel in that both deal essentially with conforming behavior. (Publisher abstract)