Data for: CAN WE MAKE USE OF PERCEPTION OF QUESTIONS’ EASINESS IN DELPHI-LIKE STUDIES?

Primary data collected in an experiment: [variable: basic description] session: session number date: session date round: round number numquest: question number quest: question (in Portuguese). See article for its translated version. indiv: respondent identification sex: respondent gender birth: respondent date of birth rate: self-rating. Scale 1 to 5. (1: very difficult; 2: difficult; 3: moderate; 4: easy; 5: very easy) answer: answer given by respondent true_value: question’s true value dt_fut: date in the future referred in the question feed: feedback type. (0: Classic feedback (or control) ; 1: Elite feedback (or treatment))