Belief incongruence and the intention-behavior gap in persons with at-risk alcohol use.
BACKGROUND
When intentions are expressed, e.g., when filling in a health questionnaire, people may have unrealistic beliefs towards behavior change resulting in strong intentions to change. These may fail to correspond to reality when the behavior actually should be performed. Belief incongruence was tested as a possible source of the intention-behavior gap.


METHODS
The study sample consisted of 433 job agency clients with at-risk alcohol use (64% men, mean age=30.6 (SD=11.6) years). Behavioral, normative, and control beliefs, intention, and alcohol use were assessed at baseline and three months later. The influence of belief incongruence on the intention-behavior gap was examined using latent interaction models.


RESULTS
The gap between stated intentions and at-risk alcohol use three months later was larger when the according normative beliefs were incongruent (total effect: b=-0.44, p<0.05 for persons with congruent beliefs vs. b=-0.06, p>0.10 for persons with incongruent beliefs). When controlling for the mediating effect of changes in intentions, the association between belief incongruence and intention-behavior gap was attenuated (direct effect: b=-0.56, p<0.01 for persons with congruent beliefs vs. b=-0.28, p<0.05 for persons with incongruent beliefs). Neither behavioral belief incongruence nor control belief incongruence was significantly associated with the intention-behavior gap.


CONCLUSIONS
Normative belief incongruence may contribute to the gap between intentions to adhere to recommended drinking limits and subsequent at-risk alcohol use. Focusing on the reduction of misperceptions about drinking norms could help to increase the proportion of persons who succeed in translating their intentions into behavior.
University Medicine Greifswald, Institute of Social Medicine and Prevention, Walther-Rathenau-Str. 48, 17475 Greifswald, Germany; German Centre for Cardiovascular Research, Partner Site Greifswald, Fleischmannstr. 42-44, 17489 Greifswald, Germany. Electronic address: sophie.baumann@uni-greifswald.de.
Sophie
S
Baumann
Robert Koch Institute, Department of Epidemiology and Health Monitoring, General-Pape-Str. 62-66, 12101 Berlin, Germany.
Beate
B
Gaertner
University Medicine Greifswald, Institute of Social Medicine and Prevention, Walther-Rathenau-Str. 48, 17475 Greifswald, Germany; German Centre for Cardiovascular Research, Partner Site Greifswald, Fleischmannstr. 42-44, 17489 Greifswald, Germany.
Inga
I
Schnuerer
University Medicine Greifswald, Institute of Social Medicine and Prevention, Walther-Rathenau-Str. 48, 17475 Greifswald, Germany; German Centre for Cardiovascular Research, Partner Site Greifswald, Fleischmannstr. 42-44, 17489 Greifswald, Germany.
Katja
K
Haberecht
University Medicine Greifswald, Institute of Social Medicine and Prevention, Walther-Rathenau-Str. 48, 17475 Greifswald, Germany; German Centre for Cardiovascular Research, Partner Site Greifswald, Fleischmannstr. 42-44, 17489 Greifswald, Germany.
Ulrich
U
John
University Medicine Greifswald, Institute of Social Medicine and Prevention, Walther-Rathenau-Str. 48, 17475 Greifswald, Germany; German Centre for Cardiovascular Research, Partner Site Greifswald, Fleischmannstr. 42-44, 17489 Greifswald, Germany.
Jennis
J
Freyer-Adam
D000328:Adult; D000428:Alcohol Drinking / Q000453:epidemiology / Q000523:psychology*; D001294:Attitude to Health; D005260:Female; D005858:Germany / Q000453:epidemiology; D006801:Humans; D033182:Intention; D016015:Logistic Models; D008297:Male; D012309:Risk-Taking; D011795:Surveys and Questionnaires; D055815:Young Adult
Alcohol use; Belief congruence; Intention; Intention–behavior gap; Theory of Planned Behavior