Effect of the anchoring and adjustment heuristic and optimism bias in stock market forecasts

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Autor principal: Víctor Alberto Peña
Formato: Artículo científico
Lenguaje:en
Publicado: Universidad Católica de Colombia 2019
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author Víctor Alberto Peña
author_facet Víctor Alberto Peña
contents Effect of the anchoring and adjustment heuristic and optimism bias in stock market forecasts Víctor Alberto Peña Alina Gómez-Mejía Economía y Finanzas judgment optimism bias behavioral finance financial forecast Anchor and adjustment heuristic Stock market forecasting is an important and challenging process that influences investment decisions. This paper presents an experimental design that aims to measure the influence of the anchoring and adjustment heuristic and optimism bias in these forecasts.The study was conducted using information from the S&P MILA Pacific Alliance Select financial index; this was presented to 670 students from the cities of Concepción (Chile), Cali (Colombia), and Lima (Peru). Data was collected and presented through an instrument that asked participants to make a forecast judgment of the said financial index, based on the presented graphics, representing a year, a month, a week, and the last closing value of the index. Thus, it was possible to measure the influence of the anchor and adjustment heuristic in order to establish whether the presence of an initial value affected the financial forecast. Similarly, the study sought to determine whether the judgment issued was biased toward an optimistic or pessimistic position, thereby proving the presence of an error or expectation bias, known as optimism bias.The results were analyzed using the least squares method, and the data panel confirmed that the anchoring and adjustment heuristic influences the forecast of the financial index used in the study. Similarly, the presence of optimism bias in the cognitive process of forecasting in finance was inferred.JEL Classification: C2, G15, G40, G41. 2019 artículo científico 2248-6046 https://www.redalyc.org/articulo.oa?id=323564772010 https://www.redalyc.org/journal/3235/323564772010/ https://www.redalyc.org/journal/3235/323564772010/html/ https://www.redalyc.org/journal/3235/323564772010/323564772010.epub https://www.redalyc.org/journal/3235/323564772010/movil 10.14718/revfinanzpolitecon.2019.11.2.10 en http://www.redalyc.org/revista.oa?id=3235 Revista Finanzas y Política Económica application/pdf Universidad Católica de Colombia Revista Finanzas y Política Económica (Colombia) Num.2 Vol.11
format Artículo científico
id redalyc_323564772010
institution Redalyc
language en
publishDate 2019
publisher Universidad Católica de Colombia
spellingShingle Effect of the anchoring and adjustment heuristic and optimism bias in stock market forecasts
Víctor Alberto Peña
Economía y Finanzas
judgment
optimism bias
behavioral finance
financial forecast
Anchor and adjustment heuristic
Effect of the anchoring and adjustment heuristic and optimism bias in stock market forecasts Víctor Alberto Peña Alina Gómez-Mejía Economía y Finanzas judgment optimism bias behavioral finance financial forecast Anchor and adjustment heuristic Stock market forecasting is an important and challenging process that influences investment decisions. This paper presents an experimental design that aims to measure the influence of the anchoring and adjustment heuristic and optimism bias in these forecasts.The study was conducted using information from the S&P MILA Pacific Alliance Select financial index; this was presented to 670 students from the cities of Concepción (Chile), Cali (Colombia), and Lima (Peru). Data was collected and presented through an instrument that asked participants to make a forecast judgment of the said financial index, based on the presented graphics, representing a year, a month, a week, and the last closing value of the index. Thus, it was possible to measure the influence of the anchor and adjustment heuristic in order to establish whether the presence of an initial value affected the financial forecast. Similarly, the study sought to determine whether the judgment issued was biased toward an optimistic or pessimistic position, thereby proving the presence of an error or expectation bias, known as optimism bias.The results were analyzed using the least squares method, and the data panel confirmed that the anchoring and adjustment heuristic influences the forecast of the financial index used in the study. Similarly, the presence of optimism bias in the cognitive process of forecasting in finance was inferred.JEL Classification: C2, G15, G40, G41. 2019 artículo científico 2248-6046 https://www.redalyc.org/articulo.oa?id=323564772010 https://www.redalyc.org/journal/3235/323564772010/ https://www.redalyc.org/journal/3235/323564772010/html/ https://www.redalyc.org/journal/3235/323564772010/323564772010.epub https://www.redalyc.org/journal/3235/323564772010/movil 10.14718/revfinanzpolitecon.2019.11.2.10 en http://www.redalyc.org/revista.oa?id=3235 Revista Finanzas y Política Económica application/pdf Universidad Católica de Colombia Revista Finanzas y Política Económica (Colombia) Num.2 Vol.11
title Effect of the anchoring and adjustment heuristic and optimism bias in stock market forecasts
topic Economía y Finanzas
judgment
optimism bias
behavioral finance
financial forecast
Anchor and adjustment heuristic
url https://www.redalyc.org/articulo.oa?id=323564772010
https://www.redalyc.org/journal/3235/323564772010/
https://www.redalyc.org/journal/3235/323564772010/html/
https://www.redalyc.org/journal/3235/323564772010/323564772010.epub
https://www.redalyc.org/journal/3235/323564772010/movil