Reviews concepts of aptitude and aptitude-treatment interaction (ATI) and summarizes lessons learned in ATI research on educational treatments to help ATI research on psychotherapeutic treatments. Research design and data analysis recommendations address aptitude distributions, multivariate aptitude complexes, detective work with scatterplots,…

Discusses epistemological and methodological issues regarding aptitude-treatment interactions (ATI) in psychotherapy. Noting that track record of interactional research is not very encouraging, argues that ATI research should focus on heuristic goal of illuminating mechanisms and processes that make therapies differentially effective. Suggests…

Notes that smaller than expected main effects in psychotherapy research are often attributed to mismatches between clients and treatment. Examines issues in aptitude-treatment interaction (ATI) research in psychotherapy, including Type II and Type III errors, manipulation checks from both patient and practitioner perspectives, considerations of…

Describes the development of a work sample battery designed for assessment of vocational aptitudes, interests, and temperament in a disadvantaged client population. VITAS provides information about factors most related to success on the job: interest in the job, temperament for the job, and aptitudes for physical and cognitive components of the…

This paper presents a model of cognitive development across the life span that is designed to integrate the diverse empirical evidence in the area of cognitive development in childhood and adulthood. Relevant research is reviewed in the relationships between performance and age, and the effects of training on performance. A model is then proposed…