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Moderator variable

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This is an old revision of this page, as edited by Athaenara (talk | contribs) at 00:40, 26 August 2007 (Wikified. Single article reference is a 1986 Journal of Personality and Social Psychology article.). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.

A moderator variable is, in general terms, a qualitative (e.g., sex, race, class) or quantitative (e.g., level of reward) variable that affects the direction and/or strength of the relation between dependent and independent variables. Specifically within a correlational analysis framework, a moderator is a third variable that affects the zero-order correlation between two other variables. In analysis of variance (ANOVA) terms, a basic moderator effect can be represented as an interaction between a focal independent variable and a factor that specifies the appropriate conditions for its operation (Baron and Kenny, 1986: p. 1174).

References

  • Baron, R. M., & Kenny, D. A. (1986). "The moderator-mediator variable distinction in social psychological research: Conceptual, strategic, and statistical considerations." Journal of Personality and Social Psychology, 51, pp. 1173-1182.
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