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Moderator effects differ on alternative effect-size measures

Smithson, Michael; Shou, Yiyun

Description

This paper discusses largely ignored issues regarding moderation of effect-sizes. We show that, under commonly-occurring conditions, popular alternatives for effect-size measures in ANOVA and multiple regression are not moderated identically across independent samples. Effects may appear to be unmoderated according to one effect-size measure but not according to another, or may even be moderated in opposite directions. We identify the conditions under which differential effect-size moderation...[Show more]

dc.contributor.authorSmithson, Michael
dc.contributor.authorShou, Yiyun
dc.date.accessioned2016-10-07T05:25:47Z
dc.date.available2016-10-07T05:25:47Z
dc.identifier.issn1554-3528
dc.identifier.urihttp://hdl.handle.net/1885/109181
dc.description.abstractThis paper discusses largely ignored issues regarding moderation of effect-sizes. We show that, under commonly-occurring conditions, popular alternatives for effect-size measures in ANOVA and multiple regression are not moderated identically across independent samples. Effects may appear to be unmoderated according to one effect-size measure but not according to another, or may even be moderated in opposite directions. We identify the conditions under which differential effect-size moderation can occur, and show that they are commonplace. We then review techniques for detecting and dealing with differential moderation of alternative effect-size measures. Finally, we discuss implications for research practice, reporting, replication, and meta-analysis.
dc.format11 pages
dc.publisherSpringer Verlag
dc.rights© 2016 Psychonomic Society, Inc.
dc.sourceBehavior research methods
dc.subjectanova
dc.subjectCohen's d
dc.subjecteffect size
dc.subjectmoderator
dc.subjectpartial correlation
dc.subjectregression
dc.subjectregression coefficient
dc.subjectreplication
dc.subjectsemi-partial correlation
dc.titleModerator effects differ on alternative effect-size measures
dc.typeJournal article
dc.date.issued2016-04-29
local.publisher.urlhttp://link.springer.com/
local.type.statusAccepted Version
local.contributor.affiliationSmithson, M., Research School of Psychology, The Australian National University
local.contributor.affiliationShou, Y., Research School of Psychology, The Australian National University
local.identifier.essn1554-3528
local.identifier.doi10.3758/s13428-016-0735-z
dcterms.accessRightsOpen Access
dc.provenancehttp://www.sherpa.ac.uk/romeo/issn/1554-351X/..."Author's post-print on any open access repository after 12 months after publication" from SHERPA/RoMEO site (as at 11/10/16).
CollectionsANU Research Publications

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