Publications by authors named "I Ajzen"

Successful campaigns to combat the COVID-19 pandemic depend, in part, on people's willingness to be vaccinated. It is therefore critical to understand the factors that determine people's vaccination intentions. We applied a reasoned action approach - the theory of planned behavior - to explore these factors.

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Objective: This study applied the theory of reasoned goal pursuit (TRGP) in predicting physical activity among Australian undergraduate students, providing the first empirical test of the model. The research comprised an elicitation study ( = 25; = 25.76, = 11.

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Article Synopsis
  • The study examines how perceived behavioral control (PBC) influences the relationship between attitudes, subjective norms, intentions, and actual health behaviors based on the theory of planned behavior.
  • A meta-analysis of 39 studies with over 13,000 participants showed that while PBC significantly moderated the intention-behavior relationship, it did not affect the relationship between attitudes or subjective norms and intentions.
  • The results indicate variability in PBC's effects across different studies, highlighting the need for further research to explore these relationships in various populations and with more detailed moderator analyses.
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Recent events, such as failed constitutional referenda, low voting turnout in the European Union parliamentary elections, and the 2016 Brexit referendum in the United Kingdom call for a better understanding of people's voting behavior in relation to the EU. The current study is the first attempt to use the theory of planned behavior to explore the antecedents of voting for EU integration in an Italian convenience sample (N = 441) of varying age. A structural equation model of voting intentions showed an excellent fit to the data, both for the whole sample and for subsamples of young vs.

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Research with the theory of planned behavior (TPB) has typically treated attitude (ATT), subjective norm (SN), and perceived behavioral control (PBC) as independent predictors of intention (INT). However, theoretically, PBC moderates the effects of ATT and SN on intention. In three studies dealing with different behaviors (voting, reducing household waste, and energy consumption) we show that greater PBC tends to strengthen the relative importance of ATT in the prediction of intention, whereas it tends to weaken the relative importance of SN.

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