Uri Simonsohn’s Top-5 Data Colada Blogposts

  1. Colada [33] “The” Effect Size Does Not Exist (by Uri Simonsohn)
    If I could choose one idea to persuade all researchers of, from all the ideas I have written about, it would be this one. So many papers, most meta-analysis papers for example, argue they are trying to estimate the evarage effect. Here i argue that’s a thing that does not exist


  2. Colada[80]  Interaction Effects Need Interaction Controls (by Uri Simonsohn)
    Explains a regression issue most people seem unaware of and demonstrates it with a paper written by Dahl & Card (the latter a Nobel prize winner), so clearly not something that’s widespreadly understood. If your key claim involves an interaction, in their case, that football losses cause more domestic violence when a team is expected to win, you need interaction controls, in their case, not just controlling for how many people watched the game, but that interacted with a loss.


  3. Colada[78] Drop that bayes (by Uri Simonsohn)
    To propose Bayes factors are what researchers should be reporting, I believe requires not knowing what researchers are trying to do, or not knowing what Bayes factors actually do.


  4. Colada[120] Off-Label Smirnov (by Uri Simonsohn)
    There is a well known classic statistical test, the Kolmogorov-Smirnov test. It has a test static “D”, which is not known to have an intuitive interpretation. But it does. It is the lower bound on the number of observations that differ across conditions.


  5. Colada[133.] Heterofriendly: The Intuition for Why You Always Need Robust Standard Errors (by Uri Simonsohn)
    When I taught my first PhD-level methods course, I invited students to submit questions about any topic in statistics or methodology. Six out of 10 students asked about the same topic: robust & clustered standard errors. It’s clearly a topic they found both important and confusing.