Financial market participants exercise judgment in decision making and psychological studies have shown that individuals are overconfident about their ability to evaluate financial securities. Range estimation calibration studies indicate that individuals tend to estimate narrow intervals in their estimation of unknown future quantities, suggesting overconfidence. Financial planners have an inherent duty of care and this may lead these individuals to behave differently in their estimation methodology and behaviour. From a survey of Australian financial planners, we find extensive overconfidence in respondents' ability to make judgements under uncertainty as shown by a narrow range of forecasts and a substantial number of inaccurate predictions. The overconfidence is present both when comparing estimates to the ex-post outcome of a predicted quantity and to an interval based on historical return volatility.
Ahlers, D., & Lakonishok, J.1983, ‘A study of economists' consensus forecasts’, Management Science, vol. 29, pp. 1113–25.
2.
Alpert, M., & Raiffa, H.1982, ‘A progress report on the training of probability assessors’, in Judgement Under Uncertainty: Heuristics and Biases, eds. D. Kahneman, P. Slovic & A. Tversky, Cambridge University Press, New York, pp. 294–305.
3.
Arkes, H. R.2001, ‘Overconfidence in judgmental forecasting’, in Principles of Forecasting: A Handbook for Researchers and Practitioners, ed. J. S. Armstrong, Kluwer Academic Publishers, Norwell, Massachusetts, pp. 495–515.
4.
Baker, H. K., & Nofsinger, J. R.2002, ‘Psychological biases of investors’, Financial Services Review, vol. 11, pp. 97–116.
5.
Barber, B. M., & Odean, T.1999, ‘The courage of misguided convictions’, Financial Analysts Journal, vol. 55, pp. 41–55.
6.
Barber, B. M., & Odean, T.2001, ‘Boys will be boys: Gender, overconfidence, and common stock investment’, Quarterly Journal of Economics, vol. 141, pp. 261–92.
7.
Berg, N., & Lein, D.2005, ‘Does society benefit from investor overconfidence in the ability of financial market experts?’, Journal of Economic Behavior & Organization, vol. 58, pp. 95–116.
8.
Brenner, L. A., Koehler, D. J., Liberman, V., & Tversky, A.1996, ‘Overconfidence in probability and frequency judgements: A critical examination’, Organizational Behavior and Human Decision Processes, vol. 65, no. 3, 212–9.
9.
Camerer, C. F., & Lovallo, D.1999, ‘Overconfidence and excess entry: An experimental approach’, American Economic Review, vol. 89, no. 1, 306–18.
10.
Connelly, T. J.1997, ‘The rational irrational behavior hypothesis’, Journal of Financial Planningvol. 10, no. 2, April, pp. 32–4.
11.
Cooper, A. C., Woo, C. Y., & Dunkelberg, W. C.1988, ‘Entrepreneurs' perceived chances for success’, Journal of Business Venturing, vol. 3, pp. 97–108.
12.
Deaves, R., Lueders, E. & Schröder, M. 2005, ‘The dynamics of overconfidence: Evidence from stock market forecasters’, ZEW Discussion Paper No. 05–83, available at SSRN: http://ssrn.com/abstract=868970
13.
DeBondt, W. F. M. & Thaler, R. H.1990, ‘Do secuirty analysts overreact?’, American Economic Review, vol. 80, pp. 52–7.
14.
Dittrich, D. A., Güth, W. & Maciejovsky, B.2005, ‘Overconfidence in investment decisions: An experimental approach’, The European Journal of Finance, vol. 11, no. 6, 471–91.
15.
Elsayed, H., & Martin, J.1998, Survey of Financial Risk Tolerance: Australian Technical Report, Chandler and Macleod Consultants Pty Ltd, Sydney.
16.
Froot, K., & Frankel, J. A.1989, ‘Forward discount bias: Is it an exchange risk premium?’, Quarterly Journal of Economics, vol. 104, pp. 139–61.
Glaser, M., Langer, T. & Weber, M. 2005, ‘Overconfidence of professionals and lay men: Individual differences within and between tasks?’, working paper, available at SSRN: http://ssrn.com/abstract=712583
19.
Kahneman, D., & Tversky, A.1979, ‘Prospect theory: An analysis of decision making under risk’, Econometrica, vol. 47, pp. 263–91.
20.
Klayman, J., Soll, J. B., Gonzalez-Vallejo, C. & Barlas, S.1999, ‘Overconfidence: It depends on how, what, and whom you ask’, Organizational Behavior and Human Decision Processes, vol. 79, no. 3, 216–47.
21.
Lichtenstein, S., Fischhoff, B. & Phillips, L. D.1982, ‘Calibration of probabilities: The state of the art to 1980’, in Judgement Under Uncertainty: Heuristics and Biases, eds. D. Kahneman, P. Slovic and A. Tversky, Cambridge University Press, New York, pp. 306–34.
22.
Nofsinger J. R.2005, The Psychology of Investing2nd edition, Pearson/Prentice Hall, Upper Saddle River, New Jersey.
23.
Oskamp, S.1965, ‘Overconfidence in case study judgements’, Journal of Consulting Psychology, vol. 29, pp. 261–5.
24.
Ricciardi, V., & Simon, H. K.2000, ‘What is behavioral finance?’, The Business, Education and Technology Journal, vol. 2, no. 1, 26–34.
25.
Roszkowski, M. J., & Snelbecker, G. E.1990, ‘Effects of ‘Framing’ on measures of risk tolerance: Financial planners are not immune’, Journal of Behavioral Economics, vol. 19, no. 3, 237–46.
26.
Russo, J. E., & Schoemaker, P. J. H.1992, ‘Managing overconfidence’, Sloan Management Review, vol. 33, no. 2, 7–17.
27.
Snelbecker, G. E., Roszkowski, M. J., & Cutler, N. E.1990, ‘Investors' risk tolerance and return aspirations, and financial advisors' interpretations: A conceptual model and exploratory data’, The Journal of Behavioural Economics, vol. 19, no. 4, 377–93.
28.
Sutton, N. A.1987, ‘An illusion of control’, Best's Review, vol. 88, no. 3, 54–8.
29.
Svenson, O.1981, ‘Are we all less risky and more skillful than our fellow drivers?’, Acta Psychologica, vol. 47, pp. 143–8.
30.
Teigen, K. H., & Jørgensen, M.2005, ‘When 90% confidence intervals are 50% certain: On the credibility of credible intervals’, Applied Cognitive Psychology, vol. 19, pp. 455–75.
