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Self‐Identity and the Theory of Planned Behavior: A Useful Addition or an Unhelpful Artifice? 1
Author(s) -
Sparks Paul,
Guthrie Carol A.
Publication year - 1998
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.1559-1816.1998.tb01683.x
Subject(s) - theory of planned behavior , psychology , social psychology , identity (music) , consumption (sociology) , identification (biology) , population , social identity theory , variables , replication (statistics) , regression analysis , control (management) , social group , statistics , mathematics , environmental health , medicine , social science , physics , botany , management , sociology , acoustics , economics , biology
Among the variables proposed as useful additions to the structure of the theory of planned behavior (Ajzen, 1991), there is evidence for the predictive usefulness of a measure of self‐identity. In the study reported here, members of the general population in the United Kingdom ( n = 235) completed a questionnaire addressing the consumption of a diet low in animal fats. The questionnaire was structured in terms of the TPB and contained additional variables that previous research has indicated to be useful predictors of intentions and behavior. A multiple regression of intentions ( R 2 = .80) showed self‐identification as a health‐conscious consumer to have a predictive effect independent of the effects of these other variables. This effect was also found in replication studies.