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A social norm nudge to save more: A field experiment at a retail bank

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  • Dur, Robert
  • Fleming, Dimitry
  • van Garderen, Marten
  • van Lent, Max

Abstract

A large fraction of households have very little savings buffer and are therefore vulnerable to financial shocks. This paper examines whether a social norm nudge can induce such households to save more. We ran a large-scale field experiment at a retail bank in the Netherlands. We find that households who are exposed to the social norm nudge click more often on a link to a personal web page where they can start or adjust an automatic savings plan. However, analyzing detailed bank data, we find no treatment effect on actual savings, neither in the short run nor in the long run. Our null findings are quite precisely estimated. A complementary small-scale survey experiment suggests that people did notice the social norm nudge and also that it had an impact on savings intentions.

Suggested Citation

  • Dur, Robert & Fleming, Dimitry & van Garderen, Marten & van Lent, Max, 2021. "A social norm nudge to save more: A field experiment at a retail bank," Journal of Public Economics, Elsevier, vol. 200(C).
  • Handle: RePEc:eee:pubeco:v:200:y:2021:i:c:s0047272721000797
    DOI: 10.1016/j.jpubeco.2021.104443
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    as
    1. Matilde Giaccherini & David H. Herberich & David Jimenez-Gomez & John A. List & Giovanni Ponti & Michael K. Price, 2019. "The Behavioralist Goes Door-To-Door: Understanding Household Technological Diffusion Using a Theory-Driven Natural Field Experiment," NBER Working Papers 26173, National Bureau of Economic Research, Inc.
    2. Christopher D. Carroll & Karen E. Dynan & Spencer D. Krane, 2003. "Unemployment Risk and Precautionary Wealth: Evidence from Households' Balance Sheets," The Review of Economics and Statistics, MIT Press, vol. 85(3), pages 586-604, August.
    3. Damgaard, Mette Trier & Gravert, Christina, 2018. "The hidden costs of nudging: Experimental evidence from reminders in fundraising," Journal of Public Economics, Elsevier, vol. 157(C), pages 15-26.
    4. Kast, Felipe & Meier, Stephan & Pomeranz, Dina, 2018. "Saving more in groups: Field experimental evidence from Chile," Journal of Development Economics, Elsevier, vol. 133(C), pages 275-294.
    5. Bruno Crépon & Esther Duflo & Marc Gurgand & Roland Rathelot & Philippe Zamora, 2013. "Do Labor Market Policies have Displacement Effects? Evidence from a Clustered Randomized Experiment," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 128(2), pages 531-580.
    6. Peter Kuhn & Peter Kooreman & Adriaan Soetevent & Arie Kapteyn, 2011. "The Effects of Lottery Prizes on Winners and Their Neighbors: Evidence from the Dutch Postcode Lottery," American Economic Review, American Economic Association, vol. 101(5), pages 2226-2247, August.
    7. John Beshears & James J. Choi & David Laibson & Brigitte C. Madrian & Katherine L. Milkman, 2015. "The Effect of Providing Peer Information on Retirement Savings Decisions," Journal of Finance, American Finance Association, vol. 70(3), pages 1161-1201, June.
    8. Christiane Bradler & Robert Dur & Susanne Neckermann & Arjan Non, 2016. "Employee Recognition and Performance: A Field Experiment," Management Science, INFORMS, vol. 62(11), pages 3085-3099, November.
    9. Esther Duflo & Emmanuel Saez, 2003. "The Role of Information and Social Interactions in Retirement Plan Decisions: Evidence from a Randomized Experiment," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 118(3), pages 815-842.
    10. Pedro Bordalo & Nicola Gennaioli & Andrei Shleifer, 2013. "Salience and Consumer Choice," Journal of Political Economy, University of Chicago Press, vol. 121(5), pages 803-843.
    11. Peter John & Toby Blume, 2018. "How best to nudge taxpayers? The impact of message simplification and descriptive social norms on payment rates in a central London local authority," Journal of Behavioral Public Administration, Center for Experimental and Behavioral Public Administration, vol. 1(1).
    12. Goldin, Jacob & Homonoff, Tatiana & Patterson, Richard & Skimmyhorn, William, 2020. "How much to save? Decision costs and retirement plan participation," Journal of Public Economics, Elsevier, vol. 191(C).
    13. Mitchell, Olivia S. & Utkus, Stephen P. (ed.), 2004. "Pension Design and Structure: New Lessons from Behavioral Finance," OUP Catalogue, Oxford University Press, number 9780199273393, Decembrie.
    14. Bernheim, B Douglas, 1994. "A Theory of Conformity," Journal of Political Economy, University of Chicago Press, vol. 102(5), pages 841-877, October.
    15. Cristina Bicchieri & Eugen Dimant, 2022. "Nudging with care: the risks and benefits of social information," Public Choice, Springer, vol. 191(3), pages 443-464, June.
    16. Duflo, Esther & Saez, Emmanuel, 2002. "Participation and investment decisions in a retirement plan: the influence of colleagues' choices," Journal of Public Economics, Elsevier, vol. 85(1), pages 121-148, July.
    17. Urban, Carly & Schmeiser, Maximilian & Collins, J. Michael & Brown, Alexandra, 2020. "The effects of high school personal financial education policies on financial behavior," Economics of Education Review, Elsevier, vol. 78(C).
    18. Gerlinde Fellner & Rupert Sausgruber & Christian Traxler, 2009. "Testing Enforcement Strategies in the Field: Legal Threat, Moral Appeal and Social Information," Discussion Paper Series of the Max Planck Institute for Research on Collective Goods 2009_31, Max Planck Institute for Research on Collective Goods.
    19. Dimant, Eugen & van Kleef, Gerben A. & Shalvi, Shaul, 2020. "Requiem for a Nudge: Framing effects in nudging honesty," Journal of Economic Behavior & Organization, Elsevier, vol. 172(C), pages 247-266.
    20. John Beshears & James J. Choi & David Laibson & Brigitte C. Madrian, 2018. "Behavioral Household Finance," NBER Working Papers 24854, National Bureau of Economic Research, Inc.
    21. Taylor Cranor & Jacob Goldin & Tatiana Homonoff & Lindsay Moore, 2020. "Communicating Tax Penalties to Delinquent Taxpayers: Evidence from a Field Experiment," National Tax Journal, National Tax Association;National Tax Journal, vol. 73(2), pages 331-360, June.
    22. Bruno S. Frey & Stephan Meier, 2004. "Social Comparisons and Pro-social Behavior: Testing "Conditional Cooperation" in a Field Experiment," American Economic Review, American Economic Association, vol. 94(5), pages 1717-1722, December.
    23. Alec Brandon & Paul Ferraro & John List & Robert Metcalfe & Michael Price & Florian Rundhammer, 2017. "Do the effects of social nudges persist? Theory and evidence from 38 natural field experiments," Natural Field Experiments 00598, The Field Experiments Website.
    24. H. Shaefer & Xiaoqing Song & Trina Williams Shanks, 2013. "Do single mothers in the United States use the Earned Income Tax Credit to reduce unsecured debt?," Review of Economics of the Household, Springer, vol. 11(4), pages 659-680, December.
    25. James J. Choi & David Laibson & Brigitte C. Madrian, 2011. "$100 Bills on the Sidewalk: Suboptimal Investment in 401(k) Plans," The Review of Economics and Statistics, MIT Press, vol. 93(3), pages 748-763, August.
    26. Lieber, Ethan M.J. & Skimmyhorn, William, 2018. "Peer effects in financial decision-making," Journal of Public Economics, Elsevier, vol. 163(C), pages 37-59.
    27. Gerlinde Fellner & Rupert Sausgruber & Christian Traxler, 2013. "Testing Enforcement Strategies In The Field: Threat, Moral Appeal And Social Information," Journal of the European Economic Association, European Economic Association, vol. 11(3), pages 634-660, June.
    28. Bernheim, B. Douglas & Garrett, Daniel M., 2003. "The effects of financial education in the workplace: evidence from a survey of households," Journal of Public Economics, Elsevier, vol. 87(7-8), pages 1487-1519, August.
    29. Alec Brandon & Paul J. Ferraro & John A. List & Robert D. Metcalfe & Michael K. Price & Florian Rundhammer, 2017. "Do The Effects of Nudges Persist? Theory and Evidence from 38 Natural Field Experiments," NBER Working Papers 23277, National Bureau of Economic Research, Inc.
    30. Blumenthal, Marsha & Christian, Charles W. & Slemrod, Joel, 2001. "Do Normative Appeals Affect Tax Compliance? Evidence From a Controlled Experiment in Minnesota," National Tax Journal, National Tax Association;National Tax Journal, vol. 54(1), pages 125-138, March.
    31. Paige Ouimet & Geoffrey Tate, 2020. "Learning from Coworkers: Peer Effects on Individual Investment Decisions," Journal of Finance, American Finance Association, vol. 75(1), pages 133-172, February.
    32. Loewenstein, George & Chater, Nick, 2017. "Putting nudges in perspective," Behavioural Public Policy, Cambridge University Press, vol. 1(1), pages 26-53, May.
    33. George A. Akerlof & Rachel E. Kranton, 2000. "Economics and Identity," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 115(3), pages 715-753.
    34. Yan Chen & F. Maxwell Harper & Joseph Konstan & Sherry Xin Li, 2010. "Social Comparisons and Contributions to Online Communities: A Field Experiment on MovieLens," American Economic Review, American Economic Association, vol. 100(4), pages 1358-1398, September.
    35. Brown, Jeffrey R. & Farrell, Anne M. & Weisbenner, Scott J., 2016. "Decision-making approaches and the propensity to default: Evidence and implications," Journal of Financial Economics, Elsevier, vol. 121(3), pages 477-495.
    36. Bhanot, Syon P., 2021. "Isolating the effect of injunctive norms on conservation behavior: New evidence from a field experiment in California," Organizational Behavior and Human Decision Processes, Elsevier, vol. 163(C), pages 30-42.
    37. Allcott, Hunt, 2011. "Social norms and energy conservation," Journal of Public Economics, Elsevier, vol. 95(9-10), pages 1082-1095, October.
    38. Blumenthal, Marsha & Christian, Charles W. & Slemrod, Joel, 2001. "Do Normative Appeals Affect Tax Compliance? Evidence from a Controlled Experiment in Minnesota," National Tax Journal, National Tax Association, vol. 54(n. 1), pages 125-38, March.
    39. Leonardo Bursztyn & Florian Ederer & Bruno Ferman & Noam Yuchtman, 2014. "Understanding Mechanisms Underlying Peer Effects: Evidence From a Field Experiment on Financial Decisions," Econometrica, Econometric Society, vol. 82(4), pages 1273-1301, July.
    40. Harrison Hong & Jeffrey D. Kubik & Jeremy C. Stein, 2004. "Social Interaction and Stock-Market Participation," Journal of Finance, American Finance Association, vol. 59(1), pages 137-163, February.
    41. Hallsworth, Michael & List, John A. & Metcalfe, Robert D. & Vlaev, Ivo, 2017. "The behavioralist as tax collector: Using natural field experiments to enhance tax compliance," Journal of Public Economics, Elsevier, vol. 148(C), pages 14-31.
    42. Neil Bhutta & Lisa J. Dettling, 2018. "Money in the Bank? Assessing Families' Liquid Savings using the Survey of Consumer Finances," FEDS Notes 2018-11-19, Board of Governors of the Federal Reserve System (U.S.).
    43. Beshears, John & Kosowsky, Harry, 2020. "Nudging: Progress to date and future directions," Organizational Behavior and Human Decision Processes, Elsevier, vol. 161(S), pages 3-19.
    44. Kristine M. Brown & Ron A. Laschever, 2012. "When They're Sixty-Four: Peer Effects and the Timing of Retirement," American Economic Journal: Applied Economics, American Economic Association, vol. 4(3), pages 90-115, July.
    45. Noah J. Goldstein & Robert B. Cialdini & Vladas Griskevicius, 2008. "A Room with a Viewpoint: Using Social Norms to Motivate Environmental Conservation in Hotels," Journal of Consumer Research, Journal of Consumer Research Inc., vol. 35(3), pages 472-482, March.
    46. Lucas C. Coffman & Clayton R. Featherstone & Judd B. Kessler, 2017. "Can Social Information Affect What Job You Choose and Keep?," American Economic Journal: Applied Economics, American Economic Association, vol. 9(1), pages 96-117, January.
    47. Dean Karlan & Margaret McConnell & Sendhil Mullainathan & Jonathan Zinman, 2016. "Getting to the Top of Mind: How Reminders Increase Saving," Management Science, INFORMS, vol. 62(12), pages 3393-3411, December.
    48. Rodríguez, Catherine & Saavedra, Juan E., 2019. "The persistent effects of youth savings reminders: Experimental evidence from text-message campaigns in Colombia," Journal of Development Economics, Elsevier, vol. 139(C), pages 135-156.
    49. Jeffrey R. Brown & Zoran Ivković & Paul A. Smith & Scott Weisbenner, 2008. "Neighbors Matter: Causal Community Effects and Stock Market Participation," Journal of Finance, American Finance Association, vol. 63(3), pages 1509-1531, June.
    50. Hunt Allcott & Todd Rogers, 2014. "The Short-Run and Long-Run Effects of Behavioral Interventions: Experimental Evidence from Energy Conservation," American Economic Review, American Economic Association, vol. 104(10), pages 3003-3037, October.
    51. Allcott, Hunt, 2011. "Social norms and energy conservation," Journal of Public Economics, Elsevier, vol. 95(9), pages 1082-1095.
    52. Bruno Frey & Stephan Meier, 2004. "In a field experiment," Natural Field Experiments 00243, The Field Experiments Website.
    53. William Skimmyhorn, 2016. "Assessing Financial Education: Evidence from Boot Camp," American Economic Journal: Economic Policy, American Economic Association, vol. 8(2), pages 322-343, May.
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    2. Mang, Clarissa & Castro, Silvia, 2023. "Breaking the Silence," VfS Annual Conference 2023 (Regensburg): Growth and the "sociale Frage" 277639, Verein für Socialpolitik / German Economic Association.
    3. Gerlinde Fellner-Röhling & Sabine Kröger & Erika Seki, 2021. "Information Regime Changes and Path Dependence - An Experimental Analysis of Public Goods Contributions in Heterogeneous Groups," CIRANO Working Papers 2021s-13, CIRANO.
    4. Linek, Maximilian & Traxler, Christian, 2021. "Framing and social information nudges at Wikipedia," Journal of Economic Behavior & Organization, Elsevier, vol. 188(C), pages 1269-1279.
    5. Andrieş, Alin Marius & Walker, Sarah, 2023. "When the message hurts: The unintended impacts of nudges on saving," Journal of Comparative Economics, Elsevier, vol. 51(2), pages 439-456.
    6. Goldin, Jacob & Homonoff, Tatiana & Patterson, Richard & Skimmyhorn, William, 2020. "How much to save? Decision costs and retirement plan participation," Journal of Public Economics, Elsevier, vol. 191(C).
    7. James Alm & Lilith Burgstaller & Arrita Domi & Amanda März & Matthias Kasper, 2023. "Nudges, Boosts, and Sludge: Using New Behavioral Approaches to Improve Tax Compliance," Economies, MDPI, vol. 11(9), pages 1-22, September.
    8. Minou Ghaffari & Maxime Kaniewicz & Stephan Stricker, 2021. "Personalized Communication Strategies: Towards A New Debtor Typology Framework," Papers 2106.01952, arXiv.org.
    9. Giorgia Barboni & Juan Camilo Cárdenas & Nicolás de Roux, 2022. "Behavioral Messages and Debt Repayment," Documentos CEDE 20257, Universidad de los Andes, Facultad de Economía, CEDE.
    10. Timmons, Shane & Robertson, Deirdre & Lunn, Pete, 2022. "Combining nudges and boosts to increase precautionary saving: A large-scale field experiment," Papers WP722, Economic and Social Research Institute (ESRI).
    11. Houman Hashemzadeh & Alireza Karbasi & Hosein Mohammadi & Ali Firoozzare & Flavio Boccia, 2022. "Investigating the Effect of Nudges on Consumers’ Willingness to Pay for Genetically Modified Corn Oil," Sustainability, MDPI, vol. 14(19), pages 1-18, October.
    12. Córdova, Angélica & Imas, Alex & Schwartz, Daniel, 2021. "Are non-contingent incentives more effective in motivating new behavior? Evidence from the field," Games and Economic Behavior, Elsevier, vol. 130(C), pages 602-615.
    13. Antonia Grohmann & Melanie Koch, 2022. "The Effect of Social Comparison on Debt Taking: Experimental Evidence," Discussion Papers of DIW Berlin 1996, DIW Berlin, German Institute for Economic Research.
    14. Diane Pelly & Orla Doyle, 2022. "Nudging in the workplace: increasing participation in employee EDI wellness events," Working Papers 202208, Geary Institute, University College Dublin.

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    More about this item

    Keywords

    Household savings; Field experiment; Nudges; Social norms;
    All these keywords.

    JEL classification:

    • C93 - Mathematical and Quantitative Methods - - Design of Experiments - - - Field Experiments
    • D14 - Microeconomics - - Household Behavior - - - Household Saving; Personal Finance
    • D90 - Microeconomics - - Micro-Based Behavioral Economics - - - General
    • E21 - Macroeconomics and Monetary Economics - - Consumption, Saving, Production, Employment, and Investment - - - Consumption; Saving; Wealth
    • G40 - Financial Economics - - Behavioral Finance - - - General

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