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The Role of Self‐identity in the Theory of Planned Behavior: A Meta‐Analysis
Author(s) -
Rise Jostein,
Sheeran Paschal,
Hukkelberg Silje
Publication year - 2010
Publication title -
journal of applied social psychology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.822
H-Index - 111
eISSN - 1559-1816
pISSN - 0021-9029
DOI - 10.1111/j.1559-1816.2010.00611.x
Subject(s) - theory of planned behavior , psychology , identity (music) , variance (accounting) , social psychology , explained variation , sample (material) , meta analysis , regression analysis , statistics , control (management) , mathematics , medicine , physics , business , management , accounting , chromatography , chemistry , acoustics , economics
The present study used meta‐analysis to evaluate the role of self‐identity in the theory of planned behavior (TPB). Altogether, 40 independent tests ( N = 11607) could be included in the review. A large, sample‐weighted average correlation between self‐identity and behavioral intention was observed ( r + = .47). Multiple regression analyses showed that self‐identity explained an increment of 6% of the variance in intention after controlling for the TPB components, and explained an increment of 9% of the variance when past behavior and the TPB components were controlled. The influence of self‐identity on behavior was largely mediated by the strength of behavioral intentions. Theoretical implications of the findings are discussed.