This report was written to provide guidance in the development and evaluation of alternative instructional approaches that hold promise of improving instructional effectiveness. The main focus of the report is on how to identify and test interactive relationships between individual differences among learners and instructional conditions or…

A study of the effects of modality preferences and teacher competencies on reading achievement was undertaken using three different programs for initial reading instruction. The major purposes of the study were to determine differences in reading achievement when first grade children are placed in programs congruent or noncongruent with their…