I apply a meta-regression analysis to a unique data set of 104 studies on multiplier effects to derive stylized facts and quantify the differing effectiveness of the composition of fiscal impulses, adjusted for study design characteristics. Public spending multipliers are close to 1 and about 0.3 to 0.4 units larger than tax and transfer multipliers. Public investment multipliers are even larger than those of spending in general by approximately 0.5 unit. Multipliers vary with study design, whose influence should be laid open when drawing policy conclusions. The analysis provides guidance concerning influential factors, their significance, and magnitude.
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