This study proposes a taxonomy of replication designs and applies it to a representative sample of experimental communication research reports in Communication Monographs and Human Communication Research. Results of the analysis indicate that publishability and reporting practices hamper our ability to identify replication studies. The implications of these findings are discussed, and several suggestions for improving the situation are offered.
The average statistical power exhibited in the 1974 volume of the Journal oj Applied Psychology was studied. One hundred twenty-one articles were poweranalytically examined using three effect-size estimates, standardized (.05) alpha level, and assuming nondirectional nulls. The mean power figures for small, medium, and large population effect-size estimates were .25, .66, and .84, respectively. Interdisciplinary comparisons involving abnormal-social psychology, education, and communication indicate that applied psychology is relatively strong in terms of average statistical power.
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