Please use this identifier to cite or link to this item: https://hdl.handle.net/10419/223675 
Year of Publication: 
2020
Series/Report no.: 
IZA Discussion Papers No. 13233
Publisher: 
Institute of Labor Economics (IZA), Bonn
Abstract: 
Researchers make hundreds of decisions about data collection, preparation, and analysis in their research. We use a many-analysts approach to measure the extent and impact of these decisions. Two published causal empirical results are replicated by seven replicators each. We find large differences in data preparation and analysis decisions, many of which would not likely be reported in a publication. No two replicators reported the same sample size. Statistical significance varied across replications, and for one of the studies the effect's sign varied as well. The standard deviation of estimates across replications was 3-4 times the typical reported standard error.
Subjects: 
replication
metascience
research
JEL: 
C81
C10
B41
Document Type: 
Working Paper

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