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Download full textHolley, Charles D.; Dansereau, Donald F. – 1979
Four types of control groups are commonly used in cognitive manipulation studies: (1) no-treatment; (2) practice with own methods; (3) practice and training with competing treatments; and (4) practice and training with irrelevant treatments. There are problems associated with the use of each group as a baseline for identifying the "true"…
Descriptors: Analysis of Covariance, Cognitive Measurement, Control Groups, Educational Research
