Making estimates and sensitivity to anchors: exploring the role of hemispheric processing

Area of Science:

• Cognitive Psychology
• Neuroscience
• Decision Making

Background:

• Hemispheric processing differences are known to influence cognitive functions.
• Anchoring effects, a common cognitive bias, occur when initial information influences subsequent judgments.
• Prior research suggests lateralized brain functions may impact cognitive biases.

Purpose of the Study:

• To investigate how hemispheric processing differences affect susceptibility to anchoring effects.
• To examine the influence of positive and negative valence on anchoring biases under different hemispheric activations.
• To test the hypothesis that hemispheric-valence consistency strengthens anchoring effects.

Main Methods:

• Participants completed both positive and negative valence anchoring tasks.
• Experimental design aimed to selectively activate either the left or right cerebral hemisphere.
• Behavioral data on judgment shifts were collected to quantify anchoring effect magnitude.

Main Results:

• Stronger anchoring effects were observed under conditions of right hemisphere activation.
• Anchoring effects were attenuated under conditions of left hemisphere activation.
• The predicted effect of hemispheric-valence consistency on anchoring bias was not supported.

Conclusions:

• Right hemisphere processing enhances susceptibility to anchoring effects.
• Left hemisphere processing attenuates anchoring effects.
• The valence hypothesis regarding hemispheric-valence consistency was not supported by the findings.