Typical assessments of temporal discounting involve presenting choices between hypothetical monetary outcomes. Participants choose between smaller immediate rewards and larger delayed rewards to determine how the passage of time affects the subjective value of reinforcement. Few studies, however, have compared such discounting to actual…

P. M. Lewinsohn has theorized that depression is related to the amount of positive reinforcement that an individual receives. Lewinsohn has supported this model in adults by showing that depression is correlated with an increase in unpleasant activities and a decrease in pleasant activities. This study extended Lewinsohn's model by developing…

This document presents a detailed review and index of post-1960 modeling-imitation research relevant to the development and education of children. Each research study is described in terms of purpose, independent and dependent variables, task and procedures, model and subject characteristics, materials and results. In addition, an overall model is…