This thesis contributes to the research on other regarding preferences by experimental studies. Chapter 1 investigates the feasibility of efficiency gains in a principal-agent relationship by voluntary leadership. Chapter 2 investigates whether negative reciprocity can be documented if the worse...

Environmental concern in the form of pro-environmental attitudes and normative expectations often serve as explanatory variables of pro-environmental behavior, but the evidence on their impact on pro-environmental action remains inconclusive. Instead of focusing under which conditions...

Background: The use of cognitive enhancement (CE) by means of pharmaceutical agents has been the subject of intense debate both among scientists and in the media. This study investigates several drivers of and obstacles to the willingness to use prescription drugs non-medically for augmenting...