of OLS and IV estimates also indicates negative selection into volunteering for both genders. In a model of optimal … volunteering, negative selection implies that a reduction in the cost of volunteering will lead to an expanded and higher …

experience. The results also indicate negative selection into unpaid work. In a simple model of optimal volunteering, negative … selection implies that a lower cost of volunteering would produce both an expanded and higher-skilled pool of volunteers, and …

regardless of compliance with the second-stage task. To test this we design and implement a field experiment on volunteering. The … compound-task mechanism reported volunteering systematically more than those who participated in alternative mechanisms we …

these motivations using data from a series of common pool resource experiments conducted in three regions of Colombia. As …

Laboratory experiments are an important methodology in economics, especially in the field of behavioral economics …. However, it is still debated to what extent results from laboratory experiments can be applied to field settings. One highly … important question with respect to the external validity of experiments is whether the same individuals act in experiments as …