Dunning-Kruger effect in climate change science communication
C. Braat (TU Delft - Civil Engineering & Geosciences)
R. Hut – Mentor (TU Delft - Water Resources)
M. W. Ertsen – Graduation committee member (TU Delft - Water Resources)
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Abstract
The knowledge deficit model assumes that people make more informed decisions when they are presented with more information. This model is often used in communication strategies while it has received quite some critique from science communicators and is not well supported by social science theories. One of these critiques comes from the observed Dunning-Kruger effect, where individuals unskilled in a certain area do not possess the skills to realize their incompetence. This effect has not been researched extensively yet in relation to climate change science communication and is the topic of this paper. By means of an online questionnaire (316 respondents), respondent’s knowledge and estimated knowledge on climate change is tested. The Dunning-Kruger effect has been detected for this group and suggests a critical re-evaluation of the knowledge deficit model, however additional research is necessary. An initial analysis into the influence of factors like age, gender and highest completed education level on actual and estimated scores and the discrepancy between these is also done to provide leads for further research.