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Using the theory of planned behaviour to predict intentions to reduce the environmental impact of travel
Abstract
The use of private cars is responsible for a large amount of the world’s CO2 emissions
and the amount of pollution produced by the aviation industry is also growing at an alarming
rate. Thus, it is important to understand the factors that can lead to pro-environmental
behaviours (PEB), such as choosing more environmentally friendly options for air and car
travel. I explored whether the Theory of Planned Behaviour (TPB) variables of
environmental attitudes, subjective norms, and perceived behavioural control (PBC)
predicted individuals’ willingness to change their travel behaviour. A sample of 327
participants from New Zealand and the United States of America completed an online
questionnaire measuring TPB variables for low-, medium- and high-cost behaviours which
were defined as short, medium, and long trips by both car and plane. I hypothesised that, in
line with the A-B-C model, the TBP variables would be most predictive of intentions to
reduce the environmental impact of medium-cost behaviours, rather than low- or high-cost
behaviours. Attitudes, subjective norms, and PBC almost always significantly predicted
behavioural intention for the NZ sample, whilst only subjective norms and PBC were
significant predictors for the USA sample, however, there was no support for the low-cost
hypothesis or A-B-C model. Findings may influence and inform interventions and policy
aimed at behavioural change in different contexts and that it may be beneficial for
interventions to be tailored to specific populations based upon the strength of correlating
variables.
Type
Thesis
Type of thesis
Series
Citation
Date
2024
Publisher
The University of Waikato
Supervisors
Rights
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