Sundblad, Biel, and Garling (2009) examined knowledge and confidence in one’s knowledge among four groups: experts, journalists, politicians, and laypersons. They surveyed 65 experts, 72 environmental journalists, 145 politicians, and 621 laypersons about ‘‘current climate state’’, ‘‘causes’’, and ‘‘consequences of climate change’’. For both variables (knowledge and confidence about knowledge), experts had the highest levels, followed by journalists, politicians, and laypersons. However, in all groups, knowledge about causes was higher than knowledge of climate state and consequences, and even then knowledge was higher about weather and/ or sea/glaciers rather than health or other issues. Finally, the authors examined ‘‘adjustment of confidence to knowledge’’ and found that journalists were more adaptable in feeling confident than experts.