Designing, Testing, and Interpreting Interactions and Moderator Effects in Family Research

This article is a primer on issues in designing, testing, and interpreting interaction or moderator effects in research on family psychology. The first section focuses on procedures for testing and interpreting simple effects and interactions, as well as common errors in testing moderators (e.g., te...

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Veröffentlicht in:Journal of family psychology 2005-03, Vol.19 (1), p.111-120
Hauptverfasser: Whisman, Mark A, McClelland, Gary H
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container_title Journal of family psychology
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creator Whisman, Mark A
McClelland, Gary H
description This article is a primer on issues in designing, testing, and interpreting interaction or moderator effects in research on family psychology. The first section focuses on procedures for testing and interpreting simple effects and interactions, as well as common errors in testing moderators (e.g., testing differences among subgroup correlations, omitting components of products, and using median splits). The second section, devoted to difficulties in detecting interactions, covers such topics as statistical power, measurement error, distribution of variables, and mathematical constraints of ordinal interactions. The third section, devoted to design issues, focuses on recommendations such as including reliable measures, enhancing statistical power, and oversampling extreme scores. The topics covered should aid understanding of existing moderator research as well as improve future research on interaction effects.
doi_str_mv 10.1037/0893-3200.19.1.111
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source Applied Social Sciences Index & Abstracts (ASSIA); MEDLINE; PsycARTICLES
subjects Behavioral Research - methods
Epidemiologic Methods
Experimental Design
Experimentation
Families & family life
Family
Family - psychology
Family Relations
Human
Humans
Interaction analysis
Interpersonal Relations
Methodology
Moderator variables
Psychological Theory
Psychology
Research Design
Social interaction
Statistical Analysis
Statistical Power
Testing
title Designing, Testing, and Interpreting Interactions and Moderator Effects in Family Research
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