Greeno (1968) has performed a valuable service to the understanding of the role of context cues in paired-associate learning by stating the associative summation position sufficiently precisely so that the issues between this position and a differentiation position can be examined more systematically. The writers believe that Greeno's results are consistent with the Saltz and Wickey (1967) differentiation position and are systematically at odds with an associative summation model for the effect of color in compound stimuli as found in the Saltz (1963) study.
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References
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