Ch'ng, Kean Siang and Zaharim, Norzarina (2009): Learning to be Biased.
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We simulate societal opinion dynamics when there is confirmation bias in information gathering and spread. If decision making is influenced by confirmation bias, the agent puts more weight on positive information to confirm hypothesis or reservation in the learning process, which renders selectivity in information gathering. If the utility discovered post purchase is low, it is externalized rather than internalized (i.e., self blame) for the selectivity of information. This causes the agent to outweigh the negative information. These two mechanisms are simulated to investigate the societal opinion dynamics and explain behavioral patterns such as overconfidence, stickiness of response and ``success breeds success" phenomenon.
|Item Type:||MPRA Paper|
|Original Title:||Learning to be Biased|
|English Title:||Learning to be Biased|
|Keywords:||Confirmation bias; Opinion percolation and convergence; Selectivity in information search; Hypothesis testing|
|Subjects:||C - Mathematical and Quantitative Methods > C6 - Mathematical Methods; Programming Models; Mathematical and Simulation Modeling > C63 - Computational Techniques; Simulation Modeling
D - Microeconomics > D0 - General > D01 - Microeconomic Behavior: Underlying Principles
|Depositing User:||Kean Siang Ch'ng|
|Date Deposited:||01. Apr 2009 04:14|
|Last Modified:||19. Feb 2013 18:57|
Barron,J (1995), ‘My side bias in thinking about abortion.’, Thinking and reasoning 7, 221–235.
Farady, M, P. and Bushley, B (1991), Everyday Reasoning and the roots of intelligence., Hillsdale, NJ: Erlbaum.
Hegselmann,R and Krause, U (2002), ‘Opinion dynamics and bounded confidence models: Analysis and simulation’, Journal of Artificial Societies and Social Simulation 5(3).
Koriat,A.,, Lichtenstein,S and B, Fischhoff (1980), ‘Reasons for confidence’, Journal of Experimental Psychology: Human Learning and Memory 6, 107–118.
Kuhn, D. (1989), ‘Children and adults as intuitive scientists’, Psyhological Review 96, 674–689.
Matlin M.W and Stang, D.J (1978), The Pollyanna principle: Selectivity in languages, memory and thought., Cambridge, MA: Shenkman.
Nickerson, R. S. (1998), ‘Confirmaion bias: A ubiquitous phenomenon in many guises.’, Review of General Psychology 2(2), 175–220.
Pyszczynski,T and Greenberg, J. (1987), Toward and integration of cognitive and motivational perspectives on social inference: A biased hypothesis testing model. Advances in experimental social psychology., New York: Academic Press.
Snyder, M , and Campbell, B. (1980), ‘Testing hypothesis about other people: The role of the hypothesis.’, Personality and Social Psychology Bulletin 6, 421–426.
Snyder,M and Gangestad.S (1981), Hypothesis testing process. New Directions in attribution research., Vol. 3, Hillsdale, NJ: Erlbaum.
Snyder,M and SwannW.B (1978), ‘Behavioral confirmation in social interaction: From social perception to social reality.’, Journal of Experimental Social Psychology, 14, 148–162.
Tversky, Amos and Daniel Kahneman (1991), ‘Loss aversion in riskless choice: A reference dependent model.’, Quarterly Journal of Economics 107(4), 1039–1061.
Weinstein,N.D (1989), ‘Optimistic bias about personal risks.’, Science, 246, 1232–1233.