EBSCO Logo
Connecting you to content on EBSCOhost
Results
Title

Strategies for Efficient Experimental Design in Studies Probing 2-1-1 Mediation.

Authors

Kelcey, Ben; Shen, Zuchao

Abstract

When well-implemented, mediation analyses play a critical role in probing theories of action because their results help lay the ground work for the critical development of a treatment and the iterative advancement of theories that are foundational to a discipline. Despite strong interest in designs that incorporate mediation, few studies have developed effective and efficient strategies to plan experiments examining multilevel mediation. We probe several design strategies for cluster-randomized designs and derive sampling plans that maximize power under cost constraints. The results suggest that among the more durable design strategies for mediation is covariance adjustment on variables predictive of the outcome and optimal sample allocation. The statistical power and optimal sample allocation results are implemented in the R package PowerUpR.

Subjects

MEDIATION; EXPERIMENTAL design; ELECTRICITY pricing; STATISTICAL power analysis; ROLE theory; ACTION theory (Psychology)

Publication

Journal of Experimental Education, 2020, Vol 88, Issue 2, p311

ISSN

0022-0973

Publication type

Academic Journal

DOI

10.1080/00220973.2018.1533796

EBSCO Connect | Privacy policy | Terms of use | Copyright | Manage my cookies
Journals | Subjects | Sitemap
© 2025 EBSCO Industries, Inc. All rights reserved