James J. Jaccard – författare
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2 produkter
2 produkter
Del 118 - Quantitative Applications in the Social Sciences
Interaction Effects in Factorial Analysis of Variance
Häftad, Engelska, 1998
821 kr
Skickas inom 3-6 vardagar
Although factorial analysis is widely used in the social sciences, there is some confusion as to how to use the techniqueÆs most powerful featureùthe evaluation of interaction effects. Written to remedy this situation, author James Jaccard clearly describes the issues underlying the effective analysis of interaction in factorial designs. The book begins by describing different ways of characterizing interactions in ANOVA, elucidating both moderator conceptualizations of interactions as well as that of residualized means. After discussing interaction effects using traditional hypothesis testing approaches, he then covers alternative analytic frameworks that focus on effect size methodology and interval estimation. Jaccard summarizes criticisms of classical null hypothesis testing and offers practical guidelines for pursuing magnitude estimation and interval estimation approaches. In addition, Jaccard shows applications of all three approaches to the analysis of interactions using a complete numerical example; discusses strategies for effectively exploring interactions in higher order designs and designs with more than two levels per factor; highlights the central role of single degree of freedom contrasts and provides numerous illustrations for formulating such contrasts; considers simplified approaches to statistical power analysis; describes approaches to consider when statistical assumptions are not met; explicates the case of unequal sample sizes; considers the impact of measurement error; and demonstrates computer applications. Readers who have wanted a book that fully discusses different conceptualizations of interactions as well as one that provides practical guidelines for analyzing complex interactions will find this volume the one that they have been seeking.
Del 114 - Quantitative Applications in the Social Sciences
LISREL Approaches to Interaction Effects in Multiple Regression
Häftad, Engelska, 1996
821 kr
Skickas inom 3-6 vardagar
Through the use of engaging and detailed examples, the authors guide the reader through the use of the computer program LISREL to show how it can be applied to the analysis of interactions in regression framework. The authors consider a wide range of applications, including qualitative moderator variables, longitudinal designs, and product term analysis. They describe different types of measurement error, and follow this discussion with latent variable representations of measurement error that serve as the foundation for the analyses described in later chapters. They then offer a brief introduction to LISREL and show how it can be used to execute the analyses. Readers can use this book without any prior training in LISREL, and will find it an excellent introduction to analytic methods that deal with the problem of measurement error in the analyses of interactions.