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Abstract
One of the motivations for choice modelling is to provide values that can be used to inform decisionmakers
about the non-market costs and benefits of proposed projects or policies. However, the
question must be asked as to whether decision-makers consider choice modelling to be a policy
relevant tool. There may be more cost-effective and convenient means of providing comparable
policy guidance than commissioning a choice modelling study. For example, advice on decision
options may be sought from experts, such as scientists. However, expert advice may not accurately
reflect the value judgements of the public.
The aim of this study is to investigate whether public and expert preferences diverge, using the
choice modelling technique. Two case studies are utilised – the Ningaloo Marine Park and the
proposed Ngari Capes Marine Park in Western Australia. Evidence of both divergence and
convergence between public and expert values is found in different instances, with public awareness
factors playing a role in this divide. Where preference divergence appears likely, decision-makers
should consider choice modelling as a useful tool to inform policy.