Category Archives: Statistics

The Alternative Specification of Interaction Models With a Discrete Modifying Variable

Benjamin Ferland¹ Since Brambor, Clark and Golder’s (2006) article in Political Analysis (hereafter BCG), our understanding of interaction models has improved significantly and most empirical scholars have now integrated the tools to execute and interpret interaction models properly. In particular, one … 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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Understanding Equation Balance in Time Series Regression

Peter K. Enns and Christopher Wlezien Abstract: Most contributors to a recent Political Analysis symposium on time series anal­ysis suggest that in order to maintain equation balance, one cannot combine stationary, integrated, and/or fractionally integrated variables with general error correction … Continue reading

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Visualize Dynamic Simulations of Autoregressive Relationships in R

by: Christopher Gandrud, Laron K. Williams, and Guy D. Whitten Two recent trends in the social sciences have drastically improved the interpretation of statistical models. The first trend is researchers providing substantively meaningful quantities of interest when interpreting models rather … Continue reading

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NAS Workshop: Statistical Challenges in Assessing and Fostering the Reproducibility of Scientific Results

On February 26-27, the National Research Council of the National Academies is hosting a workshop of the Committee on Applied and Theoretical Statistics titled “Statistical Challenges in Assessing and Fostering the Reproducibility of Scientific Results.” The workshop will include presentations and … Continue reading

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Propose to present in the International Methods Colloquium series!

Today, I’m pleased to announce that the International Methods Colloquium (IMC) is seeking presenters to fill its inaugural AY 2014/2015 schedule! I believe that the IMC provides a great opportunity for presenters to get their work out to a very large, very … 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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