This response to a paper by Guess and Carr (EC 602 212) on stereotypy and self-injurious behavior in the disabled focuses on (1) potentially misleading statements that may discourage practitioners from operant approaches to stereotypy and self-injury, and (2) strengths and weaknesses of the model compared to existing operant models. (DB)

The French language article is the second in a series and describes the principles of classic conditioning which underlie attitude formation and change. The article also notes the many functions of self-concept attitudes in order to guide the choices of intervention in attitude learning. (Author/SB)

Argues that a better understanding of developmental processes is provided by three types of operant research -- laboratory behavioral descriptions, descriptions of naturalistic behavior-environment interdependencies, and predictive naturalistic studies. The usefulness of these processes are examined in light of the goals of life span developmental…