D. Ahn, S. Choi, D. Gale, and S. Kariv, Estimating ambiguity aversion in a portfolio choice experiment, Quantitative Economics, vol.5, issue.2, 2007.
DOI : 10.3982/QE243

F. Alvarez, L. Guiso, and F. Lippi, Durable Consumption and Asset Management with Transaction and Observation Costs, American Economic Review, vol.102, issue.5, pp.2272-2300, 2012.
DOI : 10.1257/aer.102.5.2272

N. Barberis, M. Huang, and R. H. Thaler, Individual Preferences, Monetary Gambles, and Stock Market Participation: A Case for Narrow Framing, The American Economic Review, vol.96, issue.4, pp.1069-1090, 2006.
DOI : 10.1257/000282806779468652

L. Barseghyan, F. Molinari, T. O-'donoghue, and J. C. Teitelbaum, The Nature of Risk Preferences: Evidence from Insurance Choices, American Economic Review, vol.103, issue.6, pp.2499-2529, 2013.
DOI : 10.1257/aer.103.6.2499

L. Barseghyan, F. Molinari, and J. C. Teitelbaum, Inference under stability of risk preferences, 2014.

R. B. Barsky, F. T. Juster, M. S. Kimball, and M. D. Shapiro, Preference Parameters and Behavioral Heterogeneity: An Experimental Approach in the Health and Retirement Study, The Quarterly Journal of Economics, vol.112, issue.2, pp.537-579, 1997.
DOI : 10.1162/003355397555280

R. Bauer and P. Smeets, Social identi?cation and investment deci- sions, 2014.

P. Bossaerts, P. Ghirardato, S. Guarnaschelli, and W. R. Zame, Ambiguity in Asset Markets: Theory and Experiment, Review of Financial Studies, vol.23, issue.4, pp.1325-1359, 2010.
DOI : 10.1093/rfs/hhp106

P. Boyle, L. Garlappi, R. Uppal, and T. Wang, Keynes Meets Markowitz: The Trade-Off Between Familiarity and Diversification, Management Science, vol.58, issue.2, pp.253-272, 2012.
DOI : 10.1287/mnsc.1110.1349

J. V. Butler, L. Guiso, and T. Jappelli, The role of intuition and reasoning in driving aversion to risk and ambiguity', Theory and Decision -forthcoming, 2012.

R. J. Caballero and A. Krishnamurthy, Collective Risk Management in a Flight to Quality Episode, The Journal of Finance, vol.80, issue.5, pp.2195-2230, 2008.
DOI : 10.1111/j.1540-6261.2008.01394.x

R. J. Caballero and A. Simsek, Fire Sales in a Model of Complexity, The Journal of Finance, vol.26, issue.6, pp.2549-2587, 2013.
DOI : 10.1093/rfs/hht008

L. E. Calvet, J. Y. Campbell, and P. Sodini, Down or Out: Assessing the Welfare Costs of Household Investment Mistakes, Journal of Political Economy, vol.115, issue.5, pp.707-747, 2007.
DOI : 10.1086/524204

URL : https://hal.archives-ouvertes.fr/hal-00671903

J. Y. Campbell, Household Finance, The Journal of Finance, vol.18, issue.5, pp.1553-1604, 2006.
DOI : 10.1111/j.1540-6261.2006.00883.x

J. Y. Campbell, H. E. Jackson, B. C. Madrian, and P. Tufano, Consumer Financial Protection, Journal of Economic Perspectives, vol.25, issue.1, pp.91-114, 2011.
DOI : 10.1257/jep.25.1.91

J. Y. Campbell and L. M. Viceira, Strategic asset allocation: portfolio choice for long-term investors, 2002.
DOI : 10.1093/0198296940.001.0001

J. J. Choi, D. Laibson, and B. C. Madrian, Mental Accounting in Portfolio Choice: Evidence from a Flypaper Effect, American Economic Review, vol.99, issue.5, pp.2085-95, 2009.
DOI : 10.1257/aer.99.5.2085

A. Cohen and L. Einav, Estimating Risk Preferences from Deductible Choice, American Economic Review, vol.97, issue.3, pp.745-788, 2007.
DOI : 10.1257/aer.97.3.745

M. Cohen, J. Tallon, and J. Vergnaud, An experimental investigation of imprecision attitude and its relation with risk attitude and impatience, Theory and Decision, vol.21, issue.1???2, pp.81-109, 2011.
DOI : 10.1007/s11238-010-9205-8

URL : https://hal.archives-ouvertes.fr/halshs-00389674

F. Collard, S. Mukerji, K. Sheppard, and J. Tallon, Ambiguity and the Historical Equity Premium, SSRN Electronic Journal, 2012.
DOI : 10.2139/ssrn.1836297

URL : https://hal.archives-ouvertes.fr/halshs-00594096

S. Condie, Living with ambiguity: prices and survival when investors have heterogeneous preferences for ambiguity, Economic Theory, vol.58, issue.1, pp.81-108, 2008.
DOI : 10.1007/s00199-007-0264-1

S. Condie and J. V. Ganguli, The pricing e¤ects of ambiguous private information, 2012.

S. G. Dimmock, R. Kouwenberg, O. S. Mitchell, and K. Peijnenburg, Ambiguity aversion and household portfolio choice: Empirical evidence, 2013.
DOI : 10.3386/w18743

S. G. Dimmock, R. Kouwenberg, and P. P. Wakker, Ambiguity Attitudes in a Large Representative Sample, Management Science, vol.62, issue.5, 2013.
DOI : 10.1287/mnsc.2015.2198

D. Dorn and G. Huberman, Talk and Action: What Individual Investors Say and What They Do, Review of Finance, vol.9, issue.4, pp.437-481, 2005.
DOI : 10.1007/s10679-005-4997-z

J. Dow and S. R. Werlang, Uncertainty Aversion, Risk Aversion, and the Optimal Choice of Portfolio, Econometrica, vol.60, issue.1, pp.197-204, 1992.
DOI : 10.2307/2951685

L. G. Epstein and S. Ji, Ambiguous Volatility and Asset Pricing in Continuous Time, Review of Financial Studies, vol.26, issue.7, pp.1740-1786, 2013.
DOI : 10.1093/rfs/hht018

L. G. Epstein and M. Schneider, Ambiguity and Asset Markets, Annual Review of Financial Economics, vol.2, issue.1, pp.315-346, 2010.
DOI : 10.1146/annurev-financial-120209-133940

J. Etner, M. Jeleva, and J. Tallon, DECISION THEORY UNDER AMBIGUITY, Journal of Economic Surveys, vol.21, issue.2, pp.234-270, 2012.
DOI : 10.1111/j.1467-6419.2010.00641.x

URL : https://hal.archives-ouvertes.fr/halshs-00643580

C. R. Fox and A. Tversky, Ambiguity Aversion and Comparative Ignorance, The Quarterly Journal of Economics, vol.110, issue.3, pp.585-603, 1995.
DOI : 10.2307/2946693

URL : http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.395.8835

T. Gajdos, T. Hayashi, J. Tallon, and J. Vergnaud, Attitude toward imprecise information, Journal of Economic Theory, vol.140, issue.1, pp.27-65, 2008.
DOI : 10.1016/j.jet.2007.09.002

URL : https://hal.archives-ouvertes.fr/halshs-00130179

L. Garlappi, R. Uppal, and T. Wang, Portfolio Selection with Parameter and Model Uncertainty: A Multi-Prior Approach, Review of Financial Studies, vol.20, issue.1, pp.41-81, 2007.
DOI : 10.1093/rfs/hhl003

C. Gollier, Portfolio Choices and Asset Prices: The Comparative Statics of Ambiguity Aversion, The Review of Economic Studies, vol.78, issue.4, pp.1329-1344, 2011.
DOI : 10.1093/restud/rdr013

A. Guerdijkova and E. Sciubba, Survival with ambiguity, 2012.

M. Guidolin and F. Rinaldi, Ambiguity in asset pricing and portfolio choice: a review of the literature, Theory and Decision, vol.58, issue.4, pp.183-217, 2013.
DOI : 10.1007/s11238-012-9343-2

L. Guiso, P. Sapienza, and L. Zingales, Time varying risk aversion, 2013.
DOI : 10.2139/ssrn.2303800

URL : http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.468.2579

L. Guiso and P. Sodini, Household ?nance: An emerging ?eld, 2012.
DOI : 10.1016/b978-0-44-459406-8.00021-4

Y. Halevy, Ellsberg Revisited: An Experimental Study, Econometrica, vol.75, issue.2, pp.503-536, 2007.
DOI : 10.1111/j.1468-0262.2006.00755.x

URL : http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.335.5499

Y. Halevy, Strotz Meets Allais: Diminishing Impatience and the Certainty Effect, American Economic Review, vol.98, issue.3, pp.1145-62, 2008.
DOI : 10.1257/aer.98.3.1145

C. Heath and A. Tversky, Preference and belief: Ambiguity and competence in choice under uncertainty, Journal of Risk and Uncertainty, vol.80, issue.3, pp.5-28, 1991.
DOI : 10.1007/BF00057884

A. O. Ho¤mann, T. Post, and J. M. Pennings, Individual investor perceptions and behavior during the financial crisis, Journal of Banking & Finance, vol.37, issue.1, pp.60-74, 2013.
DOI : 10.1016/j.jbankfin.2012.08.007

M. Hurd, M. Van-rooij, and J. Winter, Stock market expectations of Dutch households, Journal of Applied Econometrics, vol.25, issue.3, pp.416-436, 2011.
DOI : 10.1002/jae.1242

P. K. Illeditsch, Ambiguous Information, Portfolio Inertia, and Excess Volatility, The Journal of Finance, vol.15, issue.6, pp.2213-2247, 2011.
DOI : 10.1111/j.1540-6261.2011.01693.x

N. Ju and J. Miao, Ambiguity, Learning, and Asset Returns, SSRN Electronic Journal, vol.80, issue.2, pp.559-591, 2012.
DOI : 10.2139/ssrn.1017034

URL : http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.147.6782

D. Kahneman and D. Lovallo, Timid Choices and Bold Forecasts: A Cognitive Perspective on Risk Taking, Management Science, vol.39, issue.1, pp.17-31, 1993.
DOI : 10.1287/mnsc.39.1.17

P. Klibano¤, M. Marinacci, and S. Mukerji, A Smooth Model of Decision Making under Ambiguity, Econometrica, vol.73, issue.6, pp.1849-1892, 2005.
DOI : 10.1111/j.1468-0262.2005.00640.x

Q. Lin and F. Riedel, Optimal consumption and portfolio choice with ambiguity', Institute of Mathematical Economics Working Paper No 497, p.27, 2014.

F. Maccheroni, M. Marinacci, and D. Ru¢-no, Alpha As Ambiguity: Robust Mean-Variance Portfolio Analysis, SSRN Electronic Journal, vol.81, issue.3, pp.1075-1113, 2013.
DOI : 10.2139/ssrn.1571620

S. B. Mansour, E. Jouini, and C. Napp, Is There a ???Pessimistic??? Bias in Individual Beliefs? Evidence from a Simple Survey, Theory and Decision, vol.28, issue.1, pp.345-362, 2006.
DOI : 10.1007/s11238-006-9014-2

M. A. Petersen, Estimating Standard Errors in Finance Panel Data Sets: Comparing Approaches, Review of Financial Studies, vol.22, issue.1, pp.435-480, 2009.
DOI : 10.1093/rfs/hhn053

A. Riedl and P. Smeets, Social Preferences and Portfolio Choice, SSRN Electronic Journal, 2014.
DOI : 10.2139/ssrn.2354905

URL : http://digitalarchive.maastrichtuniversity.nl/fedora/get/guid:36a506f6-9bf9-46c8-9691-efab7d9ed5a5/ASSET1

A. Ryan, G. Trumbull, and P. Tufano, A Brief Postwar History of U.S. Consumer Finance, Business History Review, vol.4, issue.03, pp.461-498, 2011.
DOI : 10.2307/3110714

S. T. Trautmann and G. Van-de-kuilen, Ambiguity attitudes', Handbook of Judgment and Decision Making, 2013.

R. Uppal and T. Wang, Model Misspecification and Underdiversification, The Journal of Finance, vol.4, issue.6, pp.2465-2486, 2003.
DOI : 10.1046/j.1540-6261.2003.00612.x

URL : http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.195.1345

A. Vissing-jorgensen, Perspectives on behavioral ?nance: Does "irrationality" disappear with wealth? evidence from expectations and actions, in 'NBER Macroeconomics Annual, pp.139-208, 2003.

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