Quantity Estimations by Groups and Individuals: Effects of Known Domain Boundaries
نویسندگان
چکیده
The authors selected 8 ordered quantities from smallest (1st) to largest (8th) from each of 36 domains, such as population of countries and production of commodities. Given the 1st and 8th (broad domain boundaries), 2nd and 7th (medium boundaries), 3rd and 6th (narrow boundaries), 2nd and 3rd, 6th and 7th, or none of the quantities, participants estimated the 4th and 5th quantities from each domain. They then repeated the estimations as 3-person groups or individuals. The groups performed at the level of their best members and better than the independent individuals. All 5 domain boundaries improved estimation for both groups and individuals. Estimations were most accurate given the narrow (3rd and 6th) boundaries, suggesting processes of assimilation rather than averaging.
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