When and how to cluster standard errors in experimental data?

Choosing whether and on which level to cluster standard errors in experimental data turns out to be less straightforward that I originally thought. However, some practical advice for experimental researchers is emerging.

Stata commands for multi-period experimental data

Multi-period experimental designs are a popular way to generate more observations and examine changes in behavior over time. Yet, choosing the most appropriate model to analyze the data can be challenging. In this post, I showcase two Stata commands that help you select among different empirical models.