More on the measurement of spontaneous alternation |
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| Authors: | Susan Karp Manning |
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| Institution: |
a Hunter College of the City University of New York, New York, N. Y., U.S.A. |
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| Abstract: | Still and MacMillan (1977) suggested the negative of the Phi coefficient (- φ) as a measure of free-trial spontaneous alternation. This new index is compared with the Adjusted Alternation Ratio (AAR), previously developed by Manning (1973b). It is concluded that there are many situations in which the AAR is a more useful measure. Other issues in assessing spontaneous alternation noted by Still and MacMillan are discussed. |
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