Social anchor effects in decision-making under ambiguity

Lahno, Amrei M. (5. Juni 2014): Social anchor effects in decision-making under ambiguity. Münchener Wirtschaftswissenschaftliche Beiträge (VWL) 2014-24

Abstract

I experimentally examine whether feedback about others' choices provides an anchor for decision-making under ambiguity. In a between-subjects design I vary whether subjects learn choices made individually by a "peer" in a first part when facing the same task a second time, and whether prospects are defined over gains or losses. My key findings are that the relative ambiguity attitude (compared to the peer's) significantly matters for shifts in individual attitudes, and that dynamics considerably differ between gain and loss domains. For gains, learning to be comparably ambiguity averse increases the likelihood for such shifts, relative to the individual condition; for losses, this likelihood decreases only if peers learn to exhibit exactly the same attitude. Further, I observe imitative shifts towards the peer's attitude in the gain domain, but only towards neutrality in the loss domain. Shifts towards neutrality for losses also appear significant without social anchor suggesting that ambiguity seeking might not be particularly robust. Moreover, cognitive ability positively correlates to shifts towards neutrality in the gain domain, but has no impact in the loss domain.

• Dokumententyp: Paper
• Keywords: Decision-making under uncertainty, ambiguity, social comparison, learning, laboratory experiment.
• Fakultät: Volkswirtschaft ; Volkswirtschaft > Munich Discussion Papers in Economics
• Themengebiete: 300 Sozialwissenschaften > 330 Wirtschaft
• JEL Classification: C91, D03, D81, D83
• Sprache: Englisch

Literaturliste

Abdellaoui, M., F. Vossmann, and M. Weber (2005). Choice-based elicitation and decomposition of decision weights for gains and losses under uncertainty. Management Science 51 (9), 1384-1399.

Ai, C. and E. C. Norton (2003). Interaction terms in logit and probit models. Economics Letters 80 (1), 123-129.

Asch, S. E. (1956). Studies of independence and conformity: I. a minority of one against a unanimous majority. Psychological Monographs: General and Applied 70 (9), 1-70.

Baillon, A. and H. Bleichrodt (2013). Testing ambiguity models through the measurement of probabilities for gains and losses. Working Paper.

Birnbaum, M. H. (1992). Violations of monotonicity and contextual effects in choice-based certainty equivalents. Psychological Science 3 (5), 310-314.

Birnbaum, M. H., G. Coffey, B. A. Mellers, and R. Weiss (1992). Utility measurement: Configuralweight theory and the judge's point of view. Journal of Experimental Psychology: Human Perception and Performance 18 (2), 331-346.

Birnbaum, M. H. and S. E. Sutton (1992). Scale convergence and utility measurement. Organizational Behavior and Human Decision Processes 52 (2), 183-215.

Burnstein, E. and A. Vinokur (1977). Persuasive argumentation and social comparison as determinants of attitude polarization. Journal of Experimental Social Psychology 13 (4), 315-332.

Bursztyn, L., F. Ederer, B. Ferman, and N. Yuchtman (forthcoming). Understanding mechanisms underlying peer effects: Evidence from a field experiment on financial decisions. Econometrica.

Cai, J., A. De Janvry, and E. Sadoulet (forthcoming). Social networks and the decision to insure. American Economic Journal: Applied Economics.

Camerer, C. F. (2003). Behavioral game theory: Experiments in strategic interaction. Princeton: Princeton University Press.

Camerer, C. F. and M. Weber (1992). Recent developments in modeling preferences: Uncertainty and ambiguity. Journal of Risk and Uncertainty 5 (4), 325-370.

Casey, J. T. and J. T. Scholz (1991). Boundary effects of vague risk information on taxpayer decisions. Organizational Behavior and Human Decision Processes 50 (2), 360-394.

Chakravarty, S. and J. Roy (2009). Recursive expected utility and the separation of attitudes towards risk and ambiguity: An experimental study. Theory and Decision 66 (3), 199-228.

Charness, G., E. Karni, and D. Levin (2007). Individual and group decision making under risk: An experimental study of bayesian updating and violations of first-order stochastic dominance. Journal of Risk and Uncertainty 35 (2), 129-148.

Charness, G., E. Karni, and D. Levin (2013). Ambiguity attitudes and social interactions: An experimental investigation. Journal of Risk and Uncertainty 46 (1), 1-25.

Cialdini, R. B. and N. J. Goldstein (2004). Social influence: Compliance and conformity. Annual Review of Psychology 55 (1), 591-621.

Cialdini, R. B. and M. R. Trost (1998). Social influence: Social norms, conformity and compliance. The Handbook of Social Psychology 55 (2), 151-192.

Cohen, M., J.-Y. Jaffray, and T. Said (1987). Experimental comparison of individual behavior under risk and under uncertainty for gains and for losses. Organizational Behavior and Human Decision Processes 39 (1), 1-22.

Curley, S. P., J. F. Yates, and R. A. Abrams (1986). Psychological sources of ambiguity avoidance. Organizational Behavior and Human Decision Processes 38 (2), 230-256.

De Lara Resende, J. G. and G. Wu (2010). Competence effects for choices involving gains and losses. Journal of Risk and Uncertainty 40 (2), 109-132.

Di Mauro, C. and A. Maffioletti (1996). An experimental investigation of the impact of ambiguity on the valuationof self-insurance and self-protection. Journal of Risk and Uncertainty 13 (1), 53-71.

Di Mauro, C. and A. Maffioletti (2004). Attitudes to risk and attitudes to uncertainty: Experimental evidence. Applied Economics 36 (4), 357-372.

Dow, J. and S. R. d. C. Werlang (1992). Uncertainty aversion, risk aversion, and the optimal choice of portfolio. Econometrica 60 (1), 197-204.

Du, N. and D. V. Budescu (2005). The effects of imprecise probabilities and outcomes in evaluating investment options. Management Science 51 (12), 1791-1803.

Easley, D. and M. O'Hara (2009). Ambiguity and nonparticipation: The role of regulation. Review of Financial Studies 22 (5), 1817-1843.

Einhorn, H. J. and R. M. Hogarth (1986). Judging probable cause. Psychological Bulletin 99 (1), 3-19.

Eisenberger, R. and M. Weber (1995). Willingness-to-pay and willingness-to-accept for risky and ambiguous lotteries. Journal of Risk and Uncertainty 10 (3), 223-233.

Ellsberg, D. (1961). Risk, ambiguity, and the savage axioms. The Quarterly Journal of Economics 75 (4), 643-669.

Ellsberg, D. (1963). [Risk, ambiguity, and the savage axioms]: Reply. The Quarterly Journal of Economics 77 (2), 336-342.

Epstein, L. G. and M. Schneider (2003). Recursive multiple-priors. Journal of Economic Theory 113 (1), 1-31.

Epstein, L. G. and M. Schneider (2007). Learning under ambiguity. The Review of Economic Studies 74 (4), 1275-1303.

Epstein, L. G. and T.Wang (1994). Intertemporal asset pricing under knightian uncertainty. Econometrica 62 (2), 283-322.

Fehr, E. and K. M. Schmidt (1999). A theory of fairness, competition, and cooperation. The Quarterly Journal of Economics 114 (3), 817-868.

Fehr, E. and K. M. Schmidt (2006). Chapter 8: The economics of fairness, reciprocity and altruism - experimental evidence and new theories. In S.-C. Kolm and J. M. Ythier (Eds.), Foundations, Volume 1 of Handbook of the Economics of Giving, Altruism and Reciprocity. Elsevier.

Fellner, W. (1961). Two propositions in the theory of induced innovations. The Economic Journal 71 (282), 305-308.

Festinger, L. (1954). A theory of social comparison processes. Human Relations 7 (2), 117-140.

Fischbacher, U. (2007). z-tree: Zurich toolbox for ready-made economic experiments. Experimental Economics 20 (2), 171-178.

Fox, C. R. and A. Tversky (1998). A belief-based account of decision under uncertainty. Management Science 44 (7), 879-895.

Fox, C. R. and M. Weber (2002). Ambiguity aversion, comparative ignorance, and decision context. Organizational Behavior and Human Decision Processes 88 (1), 476-498.

Galí, J. (1994). Keeping up with the Joneses: Consumption externalities, portfolio choice, and asset prices. Journal of Money, Credit and Banking 26 (1), 1-8.

Gärdenfors, P. (1979). Forecasts, decisions and uncertain probabilities. Erkenntnis 14 (2), 159-181.

Gebhardt, G. (2004). Inequity aversion, financial markets, and output fluctuations. Journal of the European Economic Association 2 (2-3), 229-239.

Gebhardt, G. (2011). Investment decisions with loss aversion over relative consumption. Journal of Economic Behavior and Organization 80 (1), 68-73.

Gilboa, I. and D. Schmeidler (1989). Maxmin expected utility with non-unique prior. Journal of Mathematical Economics 18 (2), 141-153.

Heath, C. and A. Tversky (1991). Preference and belief: Ambiguity and competence in choice under uncertainty. Journal of Risk and Uncertainty 4 (1), 5-28.

Ho, J. L., L. R. Keller, and P. Keltyka (2002). Effects of outcome and probabilistic ambiguity on managerial choices. Journal of Risk and Uncertainty 24 (1), 47-74.

Hogarth, R. M. and H. Kunreuther (1985). Ambiguity and insurance decisions. The American Economic Review 75 (2), 386-390.

Hogarth, R. M. and H. Kunreuther (1989). Risk, ambiguity, and insurance. Journal of Risk and Uncertainty 2 (1), 5-35.

Hong, H., J. D. Kubik, and J. C. Stein (2004). Social interaction and stock-market participation. The Journal of Finance 59 (1), 137-163.

Hoy, M., R. Peter, and A. Richter (2014). Take-up for genetic tests and ambiguity. Journal of Risk and Uncertainty 48 (2), 111-133.

Huber, P. J. (1973). The use of choquet capacities in statistics. Bulletin of the International Statistical Institute 45, 181-188.

Kahn, B. E. and R. K. Sarin (1988). Modeling ambiguity in decisions under uncertainty. Journal of Consumer Research 15 (2), 265-272.

Kahneman, D. (1992). Reference points, anchors, norms, and mixed feelings. Organizational behavior and human decision processes 51 (2), 296-312.

Kahneman, D. and A. Tversky (1979). Prospect theory: An analysis of decision under risk. Econometrica 47 (2), 263-292.

Keck, S., E. Diecidue, and D. Budescu (2011). Group decision making under ambiguity. Working Paper.

Keller, L. R., R. K. Sarin, and J. Sounderpandian (2007). An examination of ambiguity aversion: Are two heads better than one? Judgment and Decision Making 2 (6), 390-397.

Keren, G. and L. E. Gerritsen (1999). On the robustness and possible accounts of ambiguity aversion. Acta Psychologica 103 (1), 149-172.

Keynes, J. M. (1921). A treatise on probability. London: Macmillan & Co.

Knight, F. H. (1921). Risk, uncertainty and profit. New York: Hart, Schaffner and Marx.

Kocher, M. G., A. M. Lahno, and S. T. Trautmann (2014). An anatomy of ambiguity attitudes. Working Paper.

Kothiyal, A., V. Spinu, and P.Wakker (2014). An experimental test of prospect theory for predicting choice under ambiguity. Journal of Risk and Uncertainty 48 (1), 1-17.

Machina, M. J. and D. Schmeidler (1992). A more robust definition of subjective probability. Econometrica 60 (4), 745-780.

Mangelsdorff, L. and M. Weber (1994). Testing choquet expected utility. Journal of Economic Behavior & Organization 25 (3), 437-457.

Manski, C. F. (1993). Identification of endogenous social effects: The reflection problem. The Review of Economic Studies 60 (3), 531-542.

Marinacci, M. (2002). Learning from ambiguous urns. Statistical Papers 43 (1), 143-151.

Muthukrishnan, A. V., L. Wathieu, and A. J. Xu (2009). Ambiguity aversion and the preference for established brands. Management Science 55 (12), 1933-1941.

Raven, J., J. C. Raven, and J. H. Court (1998). Manual for Raven's progressive matrices and vocabulary scales. Oxford Psychologists Press.

Roberts, H. V. (1963). Risk, ambiguity, and the savage axioms: Comment. The Quarterly Journal of Economics 77 (2), 327-336.

Savage, Leonard, J. (1954). The foundations of statistics. New York: Wiley.

Toda, M. and E. H. Shuford (1965). Utility, induced utilities, and small worlds. Behavioral Science 10 (3), 238-254.

Trautmann, S. T. and F. M. Vieider (2011). Social influences on risk attitudes: Applications in economics. In S. Roeser (Ed.), Handbook of Risk Theory. Springer.

Trautmann, S. T., F. M. Vieider, and P. P. Wakker (2008). Causes of ambiguity aversion: Known versus unknown preferences. Journal of Risk and Uncertainty 36 (3), 225-243.

Trautmann, S. T., F. M. Vieider, and P. P. Wakker (2011). Preference reversals for ambiguity aversion. Management Science 57 (7), 1320-1333.

Trautmann, S. T. and P. P. Wakker (2012). Making the Anscombe-Aumann approach to ambiguity suited for descriptive applications. Working Paper, Erasmus University.

Tversky, A. and D. Kahneman (1991). Loss aversion in riskless choice: A reference-dependent model. The Quarterly Journal of Economics 106 (4), 1039-1061.

Tymula, A., P. W. Glimcher, I. Levy, and L. A. Rosenberg Belmaker (2012). Separating risk and ambiguity preferences across the life span: Novel findings and implications for policy. Working Paper, New York University.

Vieider, F., P. Martinsson, and M. Haileselassie (2012). Stake effects on ambiguity attitudes for gains and losses. Working Paper, WZB Berlin.

Viscusi, W. and H. Chesson (1999). Hopes and fears: the conflicting effects of risk ambiguity. Theory and Decision 47 (2), 157-184.

von Neumann, J. and O. Morgenstern (1947). The theory of games and economic behavior. Princeton: Princeton University Press.

Walley, P. (1991). Statistical reasoning with imprecise probabilities. London: Chapman and Hall.

Watson, D. and R. Friend (1969). Measurement of social-evaluative anxiety. Journal of Consulting and Clinical Psychology 33 (4), 448-457.