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Open Access

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Thesis (M.S.)

Year Degree Awarded



Concepts, Problem solving


The two-trial concept identification task is particularly appropriate for studying inferential capabilities of young children. When instances are presented in specified ways, the correct concept may be determined regardless of whether it occurs on both, only one, or on neither of the two trials. In addition, when attributes are dimensional in nature and limited to two values per dimension, information about one value is information about the other value. Previous experimenters have used the two-trial inference problem to study the child's ability to infer a conjunctive concept (Huttenlocher, 1964, 1967), to infer a single value from two dimensions (Scholnick, 1970, 1971a, b, c; Daehler, 1972), and to infer a single attribute from one dimension (Daehler, 1972). Training and stimulus materials were varied in the present experiment to study their influence on the child's processing of dimensionalized values in an inference task.