This report describes the design, data, and main results of an online survey (i.e., the "Judging Without Knowing …" survey) that was conducted between October 2017 and June 2018 with more than 2,000 registered members on Clickworker (a … commercial survey company in Germany). The survey was conducted in order to provide a post-hoc test of the stimulus material …

Nonresponse in surveys may result in a distortion of the distribution of interest. In a panel survey the participation …

The ifo Education Survey is a representative opinion survey of the German voting-age population on education topics … dataset comprises several survey experiments that facilitate investigating the causal effects of information provision …, framing, and question design on answering behavior. This paper gives an overview of the survey content and methodology …

Using data from a unique survey of members of parliaments in France, Germany and Italy in 2018, we estimate the effects …

business survey in the German business-related services sector when respondents may freely choose to respond either online or …