Theoretical predictions, based on the confluence model, were made for data from six national surveys of intellectual performance, each relating intellectual performance scores to family configuration variables. The confluence model was capable of accurate prediction in all cases when three parameters were estimated. (Author/RD)

A general model for a quantitative description of individual growth in learning was developed. Published data in a variety of areas and data on learning sequences in a classroom were processed through the model. Findings suggest that the general growth model governs growth phenomena. (Author/RD)