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This book has been replaced by Theory Construction and Model-Building Skills, Second Edition, ISBN 978-1-4625-4243-7.

Focusing on applied research, this book provides strategies for testing interactions in logistic regression, emphasizing the interpretation of coefficients in models with product terms. Through detailed examples, it guides readers in understanding interactive logistic models across various research scenarios. The author simplifies the process by avoiding complex formulas, opting instead for straightforward computer-based heuristics to calculate parameter estimates and standard errors, making it accessible for those with a foundational knowledge of regression techniques.

This book explores the issues underlying the effective analysis of interaction in factorial designs. It includes discussion of: different ways of characterizing interactions in ANOVA; interaction effects using traditional hypothesis testing approaches; and alternative analytic frameworks that focus on effect size methodology and interval estimation.