Samenvatting
The present study evaluated accuracy levels of seven techniques for ascertaining, after a meta-analysis, whether moderators are present or not: (a) SH-75% rule for uncorrected r, (b) SH-75% rule for corrected r, (c) SH-95% for uncorrected r, (d) SH-95% for corrected r, (e) the Q statistic, (f) inclusion of 0 in the credibility interval around the corrected r, and (g) the size of the interval. Using Monte Carlo data which were defined by various parameters including sample based artifacts, comparisons of Type I and power determinations were generated. Limitations and some practical implications for the finding are discussed.