Assimilation of information from dot and matrix patterns.

Abstract
Stimuli consisting of 1 or more dots within the outline of a square were flashed on a projection screen for 0.03 sec. Sujbects reported the positions of the dots by making marks in corresponding positions on answer sheets printed with square matrix forms. Data were scored in terms of the amts. of information transmitted by the subjects. The subjects transmitted a max. of 4.4 bits about the position of a single dot. The information increased with the number of dots to 7.8 bits for 1 through 4 dots. Combining different numbers of dots into a single test did not affect performance. Internal grid lines on the projected square had no effect. Removal of internal grid lines on the subjects answer form had no effect in the single dot test.
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