Category Archives: Replication

But Shouldn’t That Work Against Me?

Low power and low prior beliefs make it harder to obtain a positive estimate, but conditional upon obtaining a positive estimate, it’s more likely that we’ve obtained a false positive. So let’s dispense with the work-against-me defense. Continue reading

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Pitfalls when Estimating Treatment Effects Using Clustered Data

James G. MacKinnon, Department of Economics, Queen’s University1 Matthew D. Webb, Department of Economics, Carleton University Extended Abstract There is a large and rapidly growing literature on inference with clustered data, that is, data where the disturbances (error terms) are … Continue reading

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TPM: Policy on Data Access and Research Transparency

After some deliberation, the editorial team at The Political Methodologist has formulated a policy on data access and research transparency that will apply to all TPM submissions from this point forward. The policy is laid out in our instructions for … Continue reading

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Corrections and Refinements to the Database of Political Institutions’ yrcurnt Election Timing Variable

The yrcurnt variable in the Database of Political Institutions (Beck et al. 2001, updated in 2013)1–DPI–is a regularly used measure of government election timing. For example, Alt, Lassen, and Wehner (2014) use the variable in their recent study of fiscal … Continue reading

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Call for Papers: TPM Special Issue on Replication

The editors of The Political Methodologist are calling for papers for a special issue of TPM addressing the replication of empirical research in political and social science! Replication has recently become a frequent and somewhat controversial topic in the social sciences generally … Continue reading

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What does a failed replication really mean? (or, One cheer for Jason Mitchell)

A few weeks ago, Jason Mitchell wrote a piece entitled “On the emptiness of failed replications.” Mitchell is a professor in Harvard University’s department of Psychology studying “the cognitive processes that support inferences about the psychological states of other people … Continue reading

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