Which Data to Meta-Analyze, and How?: A Specification-Curve and Multiverse-Analysis Approach to Meta-Analysis

  title={Which Data to Meta-Analyze, and How?: A Specification-Curve and Multiverse-Analysis Approach to Meta-Analysis},
  author={Martin Voracek and Michael Kossmeier and Ulrich S. Tran},
  journal={Zeitschrift f{\"u}r Psychologie},
Which data to analyze, and how, are fundamental questions of all empirical research. As there are always numerous flexibilities in data-analytic decisions (a “garden of forking paths”), this poses perennial problems to all empirical research. Specification-curve analysis and multiverse analysis have recently been proposed as solutions to these issues. Building on the structural analogies between primary data analysis and meta-analysis, we transform and adapt these approaches to the meta… 

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