caa a22 4500 605489025 CHVBK 20210128100458.0 cr unu---uuuuu 210128e20150601xx s 000 0 eng 10.1007/s10683-014-9397-9 doi (NATIONALLICENCE)springer-10.1007/s10683-014-9397-9 Self-selection into laboratory experiments: pro-social motives versus monetary incentives [Elektronische Daten] [Johannes Abeler, Daniele Nosenzo] Laboratory experiments have become a wide-spread tool in economic research. Yet, there is still doubt about how well the results from lab experiments generalize to other settings. In this paper, we investigate the self-selection process of potential subjects into the subject pool. We alter the recruitment email sent to first-year students, either mentioning the monetary reward associated with participation in experiments; or appealing to the importance of helping research; or both. We find that the sign-up rate drops by two-thirds if we do not mention monetary rewards. Appealing to subjects' willingness to help research has no effect on sign-up. We then invite the so-recruited subjects to the laboratory to measure their pro-social and approval motivations using incentivized experiments. We do not find any differences between the groups, suggesting that neither adding an appeal to help research, nor mentioning monetary incentives affects the level of social preferences and approval seeking of experimental subjects. Economic Science Association, 2014 Methodology nationallicence Selection bias nationallicence Laboratory experiment nationallicence Field experiment nationallicence Other-regarding behavior nationallicence Social preferences nationallicence Social approval nationallicence Experimenter demand nationallicence Abeler Johannes University of Oxford, IZA, and CESifo, Oxford, UK aut Nosenzo Daniele University of Nottingham, Nottingham, UK aut Experimental Economics Springer US; http://www.springer-ny.com 18/2(2015-06-01), 195-214 1386-4157 18:2<195 2015 18 10683 https://doi.org/10.1007/s10683-014-9397-9 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10683-014-9397-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Abeler Johannes University of Oxford, IZA, and CESifo, Oxford, UK aut NATIONALLICENCE 700 1- Nosenzo Daniele University of Nottingham, Nottingham, UK aut NATIONALLICENCE 773 0- Experimental Economics Springer US; http://www.springer-ny.com 18/2(2015-06-01), 195-214 1386-4157 18:2<195 2015 18 10683