Published 1 includes published effect sizes obtained from summary data, whereas published 2 includes published re-analysed effect sizes together with the remaining published effect sizes obtained from summary data. We show posterior means and 95% credible intervals from multilevel meta-analyses. Estimates are presented as standardized effect sizes using Fisher’s transformation (Zr). Light, medium and dark grey show small, medium and large effect sizes, respectively (Cohen, 1988). k is the number of estimates.