Abstract
SCHWARTZ, MARILYN MILLER, and SCHOLNICK, ELLIN KOFSKY. Scalogram Analysis of Logical and Perceptual Components of Conservation of Discontinuous Quantity. CHID DEVELOPMENT, 1970, 41, 695-705. The role of stimulus factors and logical judgments in conservation of discontinuous quantity was explored using 2-choice, nonverbal discrimination tasks. 40 preschoolers estimated the amount of candy in 2 containers under conditions varying the relative diameters of the 2 containers (identical or different) and the type of judgment required (direct comparison, identity, and equivalence estimates). The tasks formed a Guttman scale. The easiest items involved identical containers. There was a significant interaction between stimulus setting and judgments. When identical containers were used, identity judgments were least accurate, but when the 2 containers differed, identity was easiest followed by equivalence and comparison judgments.
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