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The numbers inside the parentheses are the degrees of freedom for the F-statistic. The second number is the within-group degrees of freedom. When you have the same number of subjects in all conditions, then the second number will be the number of subjects - the number of cells (conditions) in your design.


Unfortunately, I'm not sure there's a quick answer to the exact amount of overlap, but you may be able to get an estimate by comparing the list of journals included in Medline (http://www.nlm.nih.gov/archive/20130415/tsd/serials/lji.html.notice.html) to the list of journals covered by PsycINFO (http://www.apa.org/pubs/databases/psycinfo/coverage.aspx). Also, ...


The F ratio statistic has a numerator and denominator degrees of freedom. Thus, you report: F (numerator_df, denominator_df) = F_value, p = ..., effect size = ... The numerator degrees of freedom relates to the factor of interest; the denominator degrees of freedom corresponds to the degrees of freedom for the error variance. The exact way that these ...

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