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Self-selection into laboratory experiments: pro-social motives versus monetary incentives

Published online by Cambridge University Press:  14 March 2025

Johannes Abeler  and
Daniele Nosenzo
Johannes Abeler*
Affiliation:
University of Oxford, IZA, and CESifo, Oxford, UK
Daniele Nosenzo*
Affiliation:
University of Nottingham, Nottingham, UK
*
johannes.abeler@economics.ox.ac.uk
daniele.nosenzo@nottingham.ac.uk
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Abstract

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.

Keywords

MethodologySelection biasLaboratory experimentField experimentOther-regarding behaviorSocial preferencesSocial approvalExperimenter demandC90D03

Information

Type
Original Paper
Information
Experimental Economics , Volume 18 , Issue 2 , June 2015 , pp. 195 - 214
Copyright
Copyright © 2014 Economic Science Association

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Footnotes

Electronic supplementary material The online version of this article (doi:https://doi.org/10.1007/s10683-014-9397-9) contains supplementary material, which is available to authorized users.

References

Anderson, J, Burks, SV, Carpenter, J, Götte, L, Maurer, K, Nosenzo, D, Potter, R, Rocha, K, & Rustichini, A (2013). Self-selection and variations in the laboratory measurement of other-regarding preferences across subject pools: Evidence from one college student and two adult samples. Experimental Economics, 16(2), 170–189. 10.1007/s10683-012-9327-7CrossRefGoogle Scholar
Banks, J, & Oldfield, Z (2007). Understanding pensions: Cognitive function, numerical ability and retirement saving. Fiscal Studies, 28(2), 143–170. 10.1111/j.1475-5890.2007.00052.xCrossRefGoogle Scholar
Bauman, Y, & Rose, E (2011). Selection or indoctrination: Why do economics students donate less than the rest?. Journal of Economic Behavior and Organization, 79(3), 318–327. 10.1016/j.jebo.2011.02.010CrossRefGoogle Scholar
Belot, M., Duch, R., & Miller, L. (2010). Who should be called to the lab? A comprehensive comparison of students and non-students in classic experimental games. University of Oxford, Nuffield College Discussion Papers (2010-001).Google Scholar
Bénabou, R, & Tirole, J (2003). Intrinsic and extrinsic motivation. Review of Economic Studies, 70(3), 489–520. 10.1111/1467-937X.00253CrossRefGoogle Scholar
Bohnet, I, & Frey, BS (1999). Social distance and other-regarding behavior in dictator games: Comment. American Economic Review, 89(1), 335–339. 10.1257/aer.89.1.335CrossRefGoogle Scholar
Brosig, J (2002). Identifying cooperative behavior: Some experimental results in a prisoner’s dilemma game. Journal of Economic Behavior and Organization, 47(3), 275–290. 10.1016/S0167-2681(01)00211-6CrossRefGoogle Scholar
Burks, S, Carpenter, J, & Götte, L (2009). Performance pay and worker cooperation: Evidence from an artefactual field experiment. Journal of Economic Behavior and Organization, 70(3), 458–469. 10.1016/j.jebo.2008.02.012CrossRefGoogle Scholar
Camerer, C. (2011). The promise and success of lab-field generalizability in experimental economics: A critical reply to Levitt and List. SSRN Working Paper.CrossRefGoogle Scholar
Charness, G, & Gneezy, U (2008). What’s in a name? Anonymity and social distance in dictator and ultimatum games. Journal of Economic Behavior and Organization, 68(1), 29–35. 10.1016/j.jebo.2008.03.001CrossRefGoogle Scholar
Chen, Y, & Li, SX (2009). Group identity and social preferences. American Economic Review, 99(1), 431–457. 10.1257/aer.99.1.431CrossRefGoogle Scholar
Cleave, BL, Nikiforakis, N, & Slonim, R (2013). Is there selection bias in laboratory experiments? The case of social and risk preferences. Experimental Economics, 16(3), 372–382. 10.1007/s10683-012-9342-8CrossRefGoogle Scholar
Coppock, A, & Green, DP (2013). Assessing the correspondence between experimental results obtained in the lab and field: A review of recent social science, Mimeo: Columbia University.Google Scholar
Cubitt, RP, Drouvelis, M, Gächter, S, & Kabalin, R (2011). Moral judgments in social dilemmas: How bad is free riding?. Journal of Public Economics, 95(3–4), 253–264. 10.1016/j.jpubeco.2010.10.011CrossRefGoogle Scholar
Dohmen, TJ, Falk, A, Huffman, D, Sunde, U, Schupp, J, & Wagner, GG (2011). Individual risk attitudes: Measurement, determinants, and behavioral consequences. Journal of the European Economic Association, 9(3), 522–550. 10.1111/j.1542-4774.2011.01015.xCrossRefGoogle Scholar
Eckel, CC, & Grossman, PJ (2000). Volunteers and pseudo-volunteers: The effect of recruitment method in dictator experiments. Experimental Economics, 3(2), 107–120.CrossRefGoogle Scholar
Falk, A, & Heckman, JJ (2009). Lab experiments are a major source of knowledge in the social sciences. Science, 326(5952), 535–538. 10.1126/science.1168244CrossRefGoogle Scholar
Falk, A, Meier, S, & Zehnder, C (2013). Do lab experiments misrepresent social preferences? The case of self-selected student samples. Journal of the European Economic Association, 11(4), 839–852. 10.1111/jeea.12019CrossRefGoogle Scholar
Fischbacher, U (2007). z-Tree: Zurich toolbox for ready-made economic experiments. Experimental Economics, 10(2), 171–178. 10.1007/s10683-006-9159-4CrossRefGoogle Scholar
Fischbacher, U, Gächter, S, & Fehr, E (2001). Are people conditionally cooperative? Evidence from a public goods experiment. Economics Letters, 71(3), 397–404. 10.1016/S0165-1765(01)00394-9CrossRefGoogle Scholar
Frank, B (1998). Good news for experimenters: Subjects do not care about your welfare. Economics Letters, 61(2), 171–174. 10.1016/S0165-1765(98)00162-1CrossRefGoogle Scholar
Frank, RH, Gilovich, T, & Regan, DT (1993). Does studying economics inhibit cooperation?. Journal of Economic Perspectives, 7(2), 159–171. 10.1257/jep.7.2.159CrossRefGoogle Scholar
Frederick, S (2005). Cognitive reflection and decision making. Journal of Economic Perspectives, 19(4), 25–42. 10.1257/089533005775196732CrossRefGoogle Scholar
Frey, BS, & Meier, S (2003). Are political economists selfish and indoctrinated? Evidence from a natural experiment. Economic Inquiry, 41(3), 448–462. 10.1093/ei/cbg020CrossRefGoogle Scholar
Glaeser, EL, Laibson, DI, Scheinkman, JA, & Soutter, CL (2000). Measuring trust. Quarterly Journal of Economics, 115(3), 811–846. 10.1162/003355300554926CrossRefGoogle Scholar
Greiner, B Kremer, K, & Macho, V (2004). An online recruitment system for economic experiments. Forschung und wissenschaftliches Rechnen. GWDG Bericht 63, Göttingen: Ges. für Wiss. Datenverarbeitung 79–93.Google Scholar
Gudjonsson, GH (1989). Compliance in an interrogative situation: A new scale. Personality and Individual Differences, 10(5), 535–540. 10.1016/0191-8869(89)90035-4CrossRefGoogle Scholar
Guillén, P, & Veszteg, RF (2012). On “lab rats”. The Journal of Socio-Economics, 41(5), 714–720. 10.1016/j.socec.2012.07.002CrossRefGoogle Scholar
Harrison, GW, Lau, MI, & Elisabet Rutström, E (2009). Risk attitudes, randomization to treatment, and self-selection into experiments. Journal of Economic Behavior and Organization, 70(3), 498–507. 10.1016/j.jebo.2008.02.011CrossRefGoogle Scholar
Heyman, J, & Ariely, D (2004). Effort for payment a tale of two markets. Psychological Science, 15(11), 787–793. 10.1111/j.0956-7976.2004.00757.xCrossRefGoogle ScholarPubMed
Hoffman, E, McCabe, K, & Smith, VL (1996). Social distance and other-regarding behavior in dictator games. American Economic Review, 86(3), 653–660.Google Scholar
Jenni, KE, & Loewenstein, G (1997). Explaining the identifiable victim effect. Journal of Risk and Uncertainty, 14(3), 235–257. 10.1023/A:1007740225484CrossRefGoogle Scholar
Kagel, JH, Battalio, RC, Walker, JM, & Smith, VL (1979). Volunteer artifacts in experiments in economics: Specification of the problem and some initial data from a small-scale field experiment. Research in experimental economics, Greenwich: JAI Press 169–197.Google Scholar
Krawczyk, M (2011). What brings your subjects to the lab? A field experiment. Experimental Economics, 14(4), 482–489. 10.1007/s10683-011-9277-5CrossRefGoogle Scholar
Levati, MV, Ploner, M, & Traub, S (2011). Are conditional cooperators willing to forgo efficiency gains? Evidence from a public goods experiment. New Zealand Economic Papers, 45(1), 47–57. 10.1080/00779954.2011.556069CrossRefGoogle Scholar
Levitt, SD, & List, JA (2007). What do laboratory experiments measuring social preferences reveal about the real world?. Journal of Economic Perspectives, 21(2), 153–174. 10.1257/jep.21.2.153CrossRefGoogle Scholar
Liebrand, WBG (1984). The effect of social motives, communication and group size on behaviour in an N-person multi-stage mixed-motive game. European Journal of Social Psychology, 14(3), 239–264. 10.1002/ejsp.2420140302CrossRefGoogle Scholar
List, J. A. (2007). Field experiments: A bridge between lab and naturally occurring data. The B.E. Journal of Economic Analysis & Policy, 6(2).CrossRefGoogle Scholar
Marwell, G, & Ames, RE (1981). Economists free ride, does anyone else? Experiments on the provision of public goods, IV. Journal of Public Economics, 15(3), 295–310. 10.1016/0047-2727(81)90013-XCrossRefGoogle Scholar
Offerman, T, Sonnemans, J, & Schram, A (1996). Value orientations, expectations and voluntary contributions in public goods. Economic Journal, 106, 817–845. 10.2307/2235360CrossRefGoogle Scholar
Park, E-S (2000). Warm-glow versus cold-prickle: A further experimental study of framing effects on free-riding. Journal of Economic Behavior and Organization, 43, 405–421. 10.1016/S0167-2681(00)00128-1CrossRefGoogle Scholar
Rosenthal, R, Rosnow, RL Rosenthal, Robert, & Rosnow, Ralph L (1969). The volunteer subject. Artifact in behavioral research, New York: Academic Press 61–118.Google Scholar
Rosenthal, R, & Rosnow, RL (1975). The volunteer subject. Wiley series of personality processes, New York: Wiley.Google Scholar
Rustagi, D, Engel, S, & Kosfeld, M (2010). Conditional cooperation and costly monitoring explain success in forest commons management. Science, 330(6006), 961–965. 10.1126/science.1193649CrossRefGoogle ScholarPubMed
Slonim, R, Wang, C, Garbarino, E, & Merrett, D (2013). Opting-In: Participation biases in the lab. Journal of Economic Behavior and Organization, 90, 43–70. 10.1016/j.jebo.2013.03.013CrossRefGoogle Scholar
Small, DA, & Loewenstein, G (2003). Helping a victim or helping the victim: Altruism and identifiability. Journal of Risk and Uncertainty, 26(1), 5–16. 10.1023/A:1022299422219CrossRefGoogle Scholar
Stöber, J (2001). The social desirability scale-17 (SDS-17): Convergent validity, discriminant validity, and relationship with age. European Journal of Psychological Assessment, 17(3), 222–232. 10.1027//1015-5759.17.3.222CrossRefGoogle Scholar
Stoop, J, Noussair, CN, & van Soest, D (2012). From the lab to the field: Cooperation among fishermen. Journal of Political Economy, 120(6), 1027–1056. 10.1086/669253CrossRefGoogle Scholar
Tishler, CL, & Bartholomae, S (2002). The recruitment of normal healthy volunteers: A review of the literature on the use of financial incentives. Journal of Clinical Pharmacology, 42(4), 365–375. 10.1177/00912700222011409CrossRefGoogle ScholarPubMed
Tomporowski, PD, Simpson, RG, & Hager, L (1993). Method of recruiting subjects and performance on cognitive tests. The American Journal of Psychology, 106(4), 499–521. 10.2307/1422966CrossRefGoogle ScholarPubMed
Tsutsui, K., & Zizzo, D. J. (2013). Group status, minorities and trust. Experimental Economics. doi:10.1007/s10683-013-9364-xCrossRefGoogle Scholar
von Gaudecker, H-M, van Soest, A, & Wengström, E (2012). Experts in experiments. Journal of Risk and Uncertainty, 45(2), 159–190. 10.1007/s11166-012-9151-7CrossRefGoogle Scholar
Zizzo, DJ (2010). Experimenter demand effects in economic experiments. Experimental Economics, 13(1), 75–98. 10.1007/s10683-009-9230-zCrossRefGoogle Scholar
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