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The magnitude and direction of statistical bias from nonrandom samples of specific types was investigated. Samples from school district populations were generated by a multistage sampling technique, with a modification that substituted for random selection the nomination of sample units at each...
The present investigation was concerned with grading standards in different major fields. Specifically, adaptation-level theory was hypothesized as a model for describing grading behavior of instructors. In this model, the stringency of grading standards is positively related to average student...
The efficacy of small group instructional programs in classificatory, seriation, and combined class/series skills was evaluated for a sample of 60 urban, middle-class 4- to 5-year-old children in a transfer of training design. Significant specific transfer effects were found for the seriation...
The use of multiple regression as a data-analytic tool is examined for the cases of balanced and unbalanced designs. The utility of this method for testing specific contrasts, both orthogonal and non-orthogonal, is discussed and some interpretive cautions are examined. An example is given to...
The Children’s Associative Responding Test (CART), a multiple-choice analogy test designed to identify children who rely excessively on associations to obvious cues rather than using their reasoning abilities, was administered to 204 fifth graders and 315 seventh graders. 10 fifth graders...
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