Adaptiveness, law-of-effect theory, and control-system theory

It is suggested that the control-system theory of Domjan et al. restates in engineering vocabulary the primary thesis of law-of-effect theories: namel y, that classical-conditioning arrangements may involve CR-contingent reinf orcement. The research cited by Domjan et al. is relevant to the idea that classical conditioning is an adaptive process, but is irrelevant to their c ontrol-system theory.