This post is the second in a series (see its introduction: htm) arguing that meta-analytic means are often meaningless, because (1) they include results from invalid tests of the research question of interest to the meta-analyst, and (2) they average across fundamentally incommensurable results. In this post we focus primarily on problem (2), though problem... The post [105] Meaningless Means #1: The Average Effect<BR> of Nudging Is d = .43 appeared first on Data Colada.