Overconfidence: It Depends on How, What, and Whom You Ask

Many studies have reported that the confidence people have in their judgments exceeds their accuracy and that overconfidence increases with the difficulty of the task. However, some common analyses confound systematic psychological effects with statistical effects that are inevitable if judgments ar...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Organizational behavior and human decision processes 1999-09, Vol.79 (3), p.216-247
Hauptverfasser: Klayman, Joshua, Soll, Jack B., González-Vallejo, Claudia, Barlas, Sema
Format: Artikel
Sprache:eng
Schlagworte:
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:Many studies have reported that the confidence people have in their judgments exceeds their accuracy and that overconfidence increases with the difficulty of the task. However, some common analyses confound systematic psychological effects with statistical effects that are inevitable if judgments are imperfect. We present three experiments using new methods to separate systematic effects from the statistically inevitable. We still find systematic differences between confidence and accuracy, including an overall bias toward overconfidence. However, these effects vary greatly with the type of judgment. There is little general overconfidence with two-choice questions and pronounced overconfidence with subjective confidence intervals. Over- and underconfidence also vary systematically with the domain of questions asked, but not as a function of difficulty. We also find stable individual differences. Determining why some people, some domains, and some types of judgments are more prone to overconfidence will be important to understanding how confidence judgments are made.
ISSN:0749-5978
1095-9920
DOI:10.1006/obhd.1999.2847