Within-subject mediation analysis for experimental data in cognitive psychology and neuroscience

Statistical mediation allows researchers to investigate potential causal effects of experimental manipulations through intervening variables. It is a powerful tool for assessing the presence and strength of postulated causal mechanisms. Although mediation is used in certain areas of psychology, it i...

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Vydáno v:Behavior research methods Ročník 50; číslo 5; s. 2125 - 2143
Hlavní autoři: Vuorre, Matti, Bolger, Niall
Médium: Journal Article
Jazyk:angličtina
Vydáno: New York Springer US 01.10.2018
Springer Nature B.V
Témata:
Applied psychology
Bayes Theorem
Bayesian analysis
Behavioral Science and Psychology
Between-subjects design
Causality
Cognition
Cognitive ability
Cognitive Psychology
Data
Data Interpretation, Statistical
Data processing
Experimental psychology
Humans
Mathematical models
Mediation
Models, Statistical
Nervous system
Neurosciences
Neurosciences - methods
Psychology
Psychology - methods
Scarcity
Software
Within-subjects design
Repeated measures
Multilevel analysis
Bayesian statistics
Mediation
Causal mechanism
ISSN:1554-3528, 1554-3528
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Shrnutí:Statistical mediation allows researchers to investigate potential causal effects of experimental manipulations through intervening variables. It is a powerful tool for assessing the presence and strength of postulated causal mechanisms. Although mediation is used in certain areas of psychology, it is rarely applied in cognitive psychology and neuroscience. One reason for the scarcity of applications is that these areas of psychology commonly employ within-subjects designs, and mediation models for within-subjects data are considerably more complicated than for between-subjects data. Here, we draw attention to the importance and ubiquity of mediational hypotheses in within-subjects designs, and we present a general and flexible software package for conducting Bayesian within-subjects mediation analyses in the R programming environment. We use experimental data from cognitive psychology to illustrate the benefits of within-subject mediation for theory testing and comparison.
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ISSN:1554-3528
1554-3528
DOI:10.3758/s13428-017-0980-9