Data for: You know nothing, John Doe – Judgmental overconfidence in lay climate knowledge

Data are shared in csv-format and consist of 26 columns and 597 rows (with headings). First column represents the index. Column “last page” indicates on which page the participant closed the survey. As in total there were 7 pages, only those participants with last page = 7 were included for the analysis. (n = 549) Column “control” describes the control question, where control = 1 was the correct answer. All other questionnaires were omitted. (n = 499) The next twenty columns indicate the ten knowledge questions + corresponding confidence levels. Knowledge questions can be incorrect (0) or correct (1). Confidence can range between 50 and 100 in decadal steps. “gender” is binary coded, female (0), male (1), not defined/no answer (NA) “age” is a metric variable, ranging from 18 to 72. “matura” is binary coded, without matura/high school degree (0), with matura/high school degree (1), not defined/no answer (NA) Not relevant data columns for this analysis were removed. Some variables have been recoded or were calculated from other variables. Data were collected in cooperation with market research agency Norstat Deutschland GmbH.本数据集以CSV格式共享，共包含26列与597行（含表头）。第一列为索引列。字段“最后页码（last page）”记录了参与者关闭调查问卷时所在的页码。由于本次问卷共设置7页，仅纳入最后页码为7的参与者用于后续分析，有效样本量为549。字段“对照题（control）”代表问卷中的校验题，其中control=1时为正确作答，未通过校验题的问卷均被剔除，最终有效样本量为499。后续二十列对应十道知识题及对应的信心水平：知识题的作答结果以0（作答错误）或1（作答正确）标识；信心水平的取值范围为50至100，步长为10。“性别（gender）”采用二分类编码规则：女性记为0，男性记为1，未定义或无有效作答的记录记为NA。“年龄（age）”为连续型变量，取值区间为18至72。“中学毕业资格（matura）”采用二分类编码：无中学毕业文凭记为0，持有中学毕业文凭记为1，未定义或无有效作答的记录记为NA。本分析剔除了无关的数据列，部分变量已完成重编码或由其他变量计算得到。本次数据采集工作由市场调研机构Norstat Deutschland GmbH合作完成。