Statistical power analysis and sample size planning for moderated mediation models.
Behav Res Methods
; 56(6): 6130-6149, 2024 09.
Article
en En
| MEDLINE
| ID: mdl-38308148
ABSTRACT
Conditional process models, including moderated mediation models and mediated moderation models, are widely used in behavioral science research. However, few studies have examined approaches to conduct statistical power analysis for such models and there is also a lack of software packages that provide such power analysis functionalities. In this paper, we introduce new simulation-based methods for power analysis of conditional process models with a focus on moderated mediation models. These simulation-based methods provide intuitive ways for sample-size planning based on regression coefficients in a moderated mediation model as well as selected variance and covariance components. We demonstrate how the methods can be applied to five commonly used moderated mediation models using a simulation study, and we also assess the performance of the methods through the five models. We implement our approaches in the WebPower R package and also in Web apps to ease their application.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Modelos Estadísticos
Límite:
Humans
Idioma:
En
Revista:
Behav Res Methods
/
Behav. res. meth
/
Behavior research methods
Asunto de la revista:
CIENCIAS DO COMPORTAMENTO
Año:
2024
Tipo del documento:
Article
País de afiliación:
Estados Unidos