Gambler's fallacy, hot hand belief, and the time of patterns

The gambler's fallacy and the hot hand belief have been classified as two exemplars of human misperceptions of random sequential events. This article examines the times of pattern occurrences where a fair or biased coin is tossed repeatedly. We demonstrate that, due to different pattern composi...

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Main Authors: Hongbin Wang, Yanlong Sun
Format: Article
Language:English
Published: Cambridge University Press 2010-04-01
Series:Judgment and Decision Making
Subjects:
Online Access:http://journal.sjdm.org/10/91117/jdm91117.pdf
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author Hongbin Wang
Yanlong Sun
author_facet Hongbin Wang
Yanlong Sun
author_sort Hongbin Wang
collection DOAJ
description The gambler's fallacy and the hot hand belief have been classified as two exemplars of human misperceptions of random sequential events. This article examines the times of pattern occurrences where a fair or biased coin is tossed repeatedly. We demonstrate that, due to different pattern composition, two different statistics (mean time and waiting time) can arise from the same independent Bernoulli trials. When the coin is fair, the mean time is equal for all patterns of the same length but the waiting time is the longest for streak patterns. When the coin is biased, both mean time and waiting time change more rapidly with the probability of heads for a streak pattern than for a non-streak pattern. These facts might provide a new insight for understanding why people view streak patterns as rare and remarkable. The statistics of waiting time may not justify the prediction by the gambler's fallacy, but paying attention to streaks in the hot hand belief appears to be meaningful in detecting the changes in the underlying process.
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spelling doaj.art-17a2a02cb7914b218deab62e298126e02023-09-02T10:42:42ZengCambridge University PressJudgment and Decision Making1930-29752010-04-0152124132Gambler's fallacy, hot hand belief, and the time of patternsHongbin WangYanlong SunThe gambler's fallacy and the hot hand belief have been classified as two exemplars of human misperceptions of random sequential events. This article examines the times of pattern occurrences where a fair or biased coin is tossed repeatedly. We demonstrate that, due to different pattern composition, two different statistics (mean time and waiting time) can arise from the same independent Bernoulli trials. When the coin is fair, the mean time is equal for all patterns of the same length but the waiting time is the longest for streak patterns. When the coin is biased, both mean time and waiting time change more rapidly with the probability of heads for a streak pattern than for a non-streak pattern. These facts might provide a new insight for understanding why people view streak patterns as rare and remarkable. The statistics of waiting time may not justify the prediction by the gambler's fallacy, but paying attention to streaks in the hot hand belief appears to be meaningful in detecting the changes in the underlying process.http://journal.sjdm.org/10/91117/jdm91117.pdfgambler's fallacy; hot hand belief; heuristics; mean time; waiting time.NAKeywords
spellingShingle Hongbin Wang
Yanlong Sun
Gambler's fallacy, hot hand belief, and the time of patterns
Judgment and Decision Making
gambler's fallacy; hot hand belief; heuristics; mean time; waiting time.NAKeywords
title Gambler's fallacy, hot hand belief, and the time of patterns
title_full Gambler's fallacy, hot hand belief, and the time of patterns
title_fullStr Gambler's fallacy, hot hand belief, and the time of patterns
title_full_unstemmed Gambler's fallacy, hot hand belief, and the time of patterns
title_short Gambler's fallacy, hot hand belief, and the time of patterns
title_sort gambler s fallacy hot hand belief and the time of patterns
topic gambler's fallacy; hot hand belief; heuristics; mean time; waiting time.NAKeywords
url http://journal.sjdm.org/10/91117/jdm91117.pdf
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