1. Introduction -- The Concept of Interaction -- Simple Effects and Interaction Contrasts -- A Review of Multiple Regression -- Overview of Book -- 2. Two-Way Interactions -- Regression Models With Product Terms -- Two Continuous Predictors -- A Qualitative Predictor and a Continuous Predictor -- 3. Three-Way Interactions -- Three Continuous Predictors -- Qualitative and Continuous Predictors -- 4. Additional Considerations -- Selected Issues
