Participants were asked questions, such as “how many of the years  between 1995 and 2006 were one of the hottest 12 years  since 1850?” After providing their answers, they were presented with data from the Intergovernmental Panel on Climate Change, in this case showing that the answer  was 11 of the 12 years.
As perguntas feitas aos participantes eram do tipo "Quantos anos, entre 1995 e 2006, "foram um dos 12 anos mais quentes desde 1850?" Depois de fornecerem as respostas, recebiam os dados do Painel Intergovernamental para a Alteração Climática que mostrava que a resposta era 11 desses 12 anos.