That certain something! Focusing on similarities reduces judgmental uncertainty

Area of Science:

• Cognitive Psychology
• Decision Science

Background:

• Comparative thinking is a cognitive strategy that reduces uncertainty.
• Comparisons can focus on similarities or differences.
• Similarity-focused comparisons may enhance information transfer, potentially reducing uncertainty.

Purpose of the Study:

• To investigate whether similarity-focused comparisons reduce judgmental uncertainty more than difference-focused comparisons.
• To examine the role of information transfer in the uncertainty-reducing effects of similarity-focused comparisons.

Main Methods:

• Two experiments were conducted to test the hypotheses.
• Study 1 compared similarity-focus, difference-focus, and control conditions using varying levels of standard-knowledge confidence.
• Study 2 examined information transfer and its relation to certainty enhancement under a similarity-focus.

Main Results:

• A similarity-focus increased judgmental certainty when standard-knowledge was confident, but this effect diminished with vague knowledge.
• Similarity-focused comparisons led to increased information transfer.
• Certainty enhancement was particularly pronounced for judgments involving successful standard-to-target information transfer.

Conclusions:

• Similarity-focused comparisons reduce judgmental uncertainty primarily through the mechanism of information transfer.
• The effectiveness of similarity-focused comparisons in reducing uncertainty depends on the quality of the information being compared.
• Findings highlight the importance of information transfer in cognitive strategies for reducing uncertainty.