Presents a speculative model for predicting differential rates of therapeutic change. From a review of 52 comparative psychotherapy studies, certain hypothesized relationships between the characteristics constituting the model and a variety of psychological treatment procedures were assessed. Use of the model for generating and guiding research is…

Cognitive change in the elderly can be due to several etiological factors which are empirically difficult to separate and clinically problematic to differentiate. Normal aging is accompanied by behavioral slowing. The slowing down of psycho-motor processes results in a lowered intelligence quotient, but cannot be taken as unequivocal evidence for…

Instrumentation, task content, the limited options of success or failure, methodology and assumptions are substantive issues which question the validity of conclusions made about human subjects in studies of achievement motivation and learned helplessness. A review of learned helplessness studies outlines the number and source of subjects, kinds…