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Judgemental adjustment of initial forecasts

Its effectiveness and biases

Bibliographic Data

ID12166308
AuthorsJoa Sang Lim (UNSW Sydney, corresponding author), Marcus O’Connor (0000-0001-6312-7867, UNSW Sydney)
Year1995
Volume8
Issue3
Pages149-168
Publication date1995-09-01
Peer ReviewedYes
Open AccessYes
TypeARTICLE
VenueJournal of Behavioral Decision Making (JOURNAL)
Journal identifiersISSN: 0894-3257 • E-ISSN: 1099-0771
PublisherWiley (PUBLISHER • GB)
DOI10.1002/bdm.3960080302
OpenAlexW2109141422
LanguageEN
Citations received26
References cited66

Managers are often required to integrate their own forecasts with statistical forecasts. The studies reported in this paper examine the efficacy of allowing people to adjust their own forecasts in the light of statistical forecasts that are provided to them. Three experimental studies varied the reliability of the statistical forecasts and examined the performance of people over time. Issues of the form of the feedback and the use of decision support were also examined. The results unequivocally suggest that the effectiveness of judgemental adjustment depended on the statistical model's reliability and seasonally of time series. However, people had considerable difficulty placing less weight on their own forecasts (compared to the statistical forecasts) and this behaviour became more pronounced over time. Even provision of decision support did not improve performance at the task

Consensus forecast · Econometrics · Economics · Machine learning · Reliability (semiconductor · Statistical analysis · Statistical model · Statistics · Task (project management · Computer Science · Decision-Making and Behavioral Economics · Forecasting Techniques and Applications · Mathematics · Psychology

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Unique citing works26
Citations per year0,96
Citation span1999 - 2026 (28)
Citation velocitycurrent
Highly citedNo
Citation typesNeutral: 26

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