A Procedure For Combining Sample Correlation-Coefficients And Vote Counts To Obtain An Estimate And A Confidence-Interval For The Population Correlation-Coefficient

    Authors

    B. J. Bushman;M. C. Wang

    Comments

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    Abbreviated Journal Title

    Psychol. Bull.

    Keywords

    Psychology; Psychology, Multidisciplinary

    Abstract

    Missing effect-size estimates pose a particularly difficult problem in meta-analysis. Rather than discarding studies with missing effect-size estimates or setting missing effect-size estimates equal to 0, the meta-analyst can supplement effect-size procedures with vote-counting procedures if the studies report the direction of results or the statistical significance of results. By combining effect-size and vote-counting procedures, the meta-analyst can obtain a less biased estimate of the population effect size and a narrower confidence interval for the population effect size. This article describes 3 vote-counting procedures for estimating the population correlation coefficient in studies with missing sample correlations. Easy-to-use tables, based on equal sample sizes, are presented for the 3 procedures. More complicated vote-counting procedures also are given for unequal sample sizes.

    Journal Title

    Psychological Bulletin

    Volume

    117

    Issue/Number

    3

    Publication Date

    1-1-1995

    Document Type

    Article

    Language

    English

    First Page

    530

    Last Page

    546

    WOS Identifier

    WOS:A1995QX81500010

    ISSN

    0033-2909

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