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Thinking about evidence and vice versa
Site URL: datacolada.org/
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Posts: 10
Followers: 5
[128] LinkedOut: The Best Published Audit Study, And Its Interesting Shortcoming
Published: June 23, 2025 11:00
There is a recent QJE paper reporting a LinkedIn audit study comparing responses to requests by Black vs White young males. I loved the paper. At every turn you come across a clever, effortful, and effective solution to a challenge posed by studying…
[127] Meaningless Means #4: Correcting Scientific Misinformation
Published: June 18, 2025 12:00
Before we got distracted by things like being sued, we had been working on a series called Meaningless Means, which exposed the fact that meta-analytic averaging is (really) bad. When a meta-analysis says something like, “The average effect of mindsets on…
[126] Stimulus Plots
Published: June 2, 2025 10:59
When we design experiments, we have to decide how to generate and select the stimuli that we use to test our hypotheses. In a forthcoming JPSP article, “Stimulus Sampling Reimagined” (htm), we propose that for at least 60 years we have been thinking about…
[125] "Complexity" 2: Don't be mean to the median
Published: April 1, 2025 11:00
In Colada[124] I summarized a co-authored critique (with Banki, Walatka and Wu) of a recent AER paper that proposed risk preferences reflect 'complexity' rather than preferences a-la Prospect Theory. Ryan Oprea, the AER author, has written a rejoinder…
[124] "Complexity": 75% of participants missed comprehension questions in AER paper critiquing Prospect Theory
Published: March 14, 2025 11:00
Kahneman and Tversky’s (1979) “Prospect Theory” article is the most cited paper in the history of economics, and it won Kahneman the Nobel Prize in 2002. Among other things, it predicts that people are risk seeking for unlikely gains (e.g., they pay more…
[123] Dear Political Scientists: The binning estimator violates ceteris paribus
Published: March 5, 2025 12:00
This post delves into a disagreement I have with three prominent political scientists, Jens Hainmueller, Jonathan Mummolo, and Yiqing Xu (HMX), on a fundamental methodological question: how to analyze interactions in observational data? In 2019, HMX…
[122] Arresting Flexibility: A QJE field experiment on police behavior with about 40 outcome variables
Published: January 7, 2025 12:00
A forthcoming paper in the Quarterly Journal of Economics (QJE), "A Cognitive View of Policing" (htm), reports results from a field experiment showing that teaching police officers to "consider different ways of interpreting situations they encounter" led…
[121] Dear Political Scientists: Don't Bin, GAM Instead
Published: December 3, 2024 12:00
There is a 2019 paper, in the journal Political Analysis (htm), with over 1000 Google cites, titled "How Much Should We Trust Estimates from Multiplicative Interaction Models? Simple Tools to Improve Empirical Practice".  The paper is not just widely…
[120] Off-Label Smirnov: How Many Subjects Show an Effect in Between-Subjects Experiments?
Published: September 16, 2024 11:00
There is a classic statistical test known as the Kolmogorov-Smirnov (KS) test (Wikipedia). This post is about an off-label use of the KS-test that I don’t think people know about (not even Kolmogorov or Smirnov), and which seems useful for experimentalists…
[119] A Hidden Confound in a Psych Methods Pre‑registrations Critique
Published: September 2, 2024 11:00
A forthcoming paper in Psych Methods (.pdf) had a set of coders evaluate 300 pre-registrations in terms of how informative they were about several study attributes (e.g., hypotheses, analysis, DVs). The authors analyzed the subjective codings and concluded…