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There is a need to extend the traditional psycho-physical methods to include the analysis of shapes or patterns. Heretofore studies designed to determine how form perception is influenced by various extrinsic factors have employed arbitrarily designed stimuli. This paper proposes several methods "for drawing "random' patterns and shapes from clearly defined hypothetical populations, to which experimental results may then be generalized with measurable confidence." 27 references.

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Judgments of complexity were obtained on shapes in which certain physical characteristics were systematically varied. Complexity appeared to be determined by the number of turns in the contour, symmetry, and differences in degrees between successive turns in the contour.

No abstract