A Contextual Effect in Judgments of Visual Numerousness
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TL;DR
Estimating the number of objects in a given situation without actually counting them is a common experience and the factors that at a given time interact to determine an estimate constitute the frame of reference for that situation.
Abstract
Estimating the number of objects in a given situation without actually counting them is a common experience. Reporters and officials may guess the number of people attending a political rally, farmers might estimate grain held in storage, and announcers of athletic events frequently guess the number of people present. The factors that at a given time interact to determine an estimate constitute the frame of reference for that situation.' Different