Debiasing Training Improves Decision Making in the Field.

Area of Science:

• Cognitive Psychology
• Decision Science
• Organizational Behavior

Background:

• Debiasing training interventions often lack evidence of effectiveness in real-world settings.
• Confirmation bias can negatively impact professional decision-making, as seen in historical cases like the Challenger launch.
• Assessing the transferability of laboratory-based debiasing effects to field settings is crucial.

Purpose of the Study:

• To evaluate the effectiveness of a one-shot debiasing training intervention on confirmation bias.
• To determine if the training improves decision-making in a simulated field setting.
• To provide evidence for the practical application of debiasing techniques in professional contexts.

Main Methods:

• A one-shot training intervention targeting confirmation bias was administered to 290 graduate students across three professional programs.
• Participants were assigned to receive training either before or after completing an unannounced business case study.
• Case solutions were used to surreptitiously measure susceptibility to confirmation bias.

Main Results:

• Trained participants were 19% less likely to select a hypothesis-confirming, inferior solution compared to untrained participants.
• Analysis indicated that reduced confirmatory hypothesis testing mediated the improved decision-making observed.
• The training demonstrated a positive effect on decision quality in a simulated field scenario.

Conclusions:

• Debiasing training can effectively reduce confirmation bias and improve decision-making in field settings.
• The observed effects suggest that debiasing training can transfer from laboratory experiments to practical applications.
• These findings support the utility of debiasing interventions for enhancing professional and personal decision-making.