Data Colada
@datacolada.bsky.social
Announcing posts for our blog.
This account is seldom monitored.
This account is seldom monitored.
Would p-curve work if you dropped a piano on it?
datacolada.org/129
datacolada.org/129
September 24, 2025 at 12:30 PM
Would p-curve work if you dropped a piano on it?
datacolada.org/129
datacolada.org/129
Colada[128] The Best Audit Study and its interesting shortcoming
datacolada.org/128
datacolada.org/128
June 23, 2025 at 2:15 PM
Colada[128] The Best Audit Study and its interesting shortcoming
datacolada.org/128
datacolada.org/128
If you saw this
3% of valuations within $1 of mean
58% of valuations within $1 of median
Which would be more representative of the data:
the mean or the median?
datacolada.org/125?ab=1
3% of valuations within $1 of mean
58% of valuations within $1 of median
Which would be more representative of the data:
the mean or the median?
datacolada.org/125?ab=1
[125] "Complexity" 2: Don't be mean to the median - Data Colada
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. ...
datacolada.org
April 2, 2025 at 11:06 AM
If you saw this
3% of valuations within $1 of mean
58% of valuations within $1 of median
Which would be more representative of the data:
the mean or the median?
datacolada.org/125?ab=1
3% of valuations within $1 of mean
58% of valuations within $1 of median
Which would be more representative of the data:
the mean or the median?
datacolada.org/125?ab=1
Measurement error, Nobel Prize winning research, friendly disagreements, and more....
datacolada.org/124
datacolada.org/124
[124] "Complexity": 75% of participants missed comprehension questions in AER paper critiquing Prospect Theory - Data Colada
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 ar...
datacolada.org
March 14, 2025 at 1:27 PM
Measurement error, Nobel Prize winning research, friendly disagreements, and more....
datacolada.org/124
datacolada.org/124
Delving into a disagreement with prominent political scientists on a fundamental data-analysis question: what do you want to learn from a regression interaction?
datacolada.org/123
datacolada.org/123
[123] Dear Political Scientists: The binning estimator violates ceteris paribus - Data Colada
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...
datacolada.org
March 5, 2025 at 12:58 PM
Delving into a disagreement with prominent political scientists on a fundamental data-analysis question: what do you want to learn from a regression interaction?
datacolada.org/123
datacolada.org/123
Did a police training improve officers' behavior during arrests?
A forthcoming QJE paper with a flexible pre-registration and key p-values of p=.048 & p=.051 says yes.
datacolada.org/122
A forthcoming QJE paper with a flexible pre-registration and key p-values of p=.048 & p=.051 says yes.
datacolada.org/122
[122] Arresting Flexibility: A QJE field experiment on police behavior with about 40 outcome variables - Data Colada
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 differ...
datacolada.org
January 7, 2025 at 4:24 PM
Did a police training improve officers' behavior during arrests?
A forthcoming QJE paper with a flexible pre-registration and key p-values of p=.048 & p=.051 says yes.
datacolada.org/122
A forthcoming QJE paper with a flexible pre-registration and key p-values of p=.048 & p=.051 says yes.
datacolada.org/122
A popular tool in political science for dealing with nonlinearities in invalidated by...
...nonlinearities.
datacolada.org/121
...nonlinearities.
datacolada.org/121
[121] Dear Political Scientists: Don't Bin, GAM Instead - Data Colada
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 ...
datacolada.org
December 3, 2024 at 6:40 PM
A popular tool in political science for dealing with nonlinearities in invalidated by...
...nonlinearities.
datacolada.org/121
...nonlinearities.
datacolada.org/121
Want to know how many people show an effect in a between-subjects study? Consider this off-label use of the Kolmogorov-Smirnov test
datacolada.org/120
datacolada.org/120
[120] Off-Label Smirnov: How Many Subjects Show an Effect in Between-Subjects Experiments? - Data Colada
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 ...
datacolada.org
September 16, 2024 at 1:10 PM
Want to know how many people show an effect in a between-subjects study? Consider this off-label use of the Kolmogorov-Smirnov test
datacolada.org/120
datacolada.org/120
Hidden Confound in Pre-Registrations Critique
datacolada.org/119
Post ends with link to submit suggestions for AsPredicted & OSF
datacolada.org/119
Post ends with link to submit suggestions for AsPredicted & OSF
[119] A Hidden Confound in a Psych Methods Pre‑registrations Critique - Data Colada
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). T...
datacolada.org
September 2, 2024 at 12:07 PM
Hidden Confound in Pre-Registrations Critique
datacolada.org/119
Post ends with link to submit suggestions for AsPredicted & OSF
datacolada.org/119
Post ends with link to submit suggestions for AsPredicted & OSF
The fake data were coming from inside the lab
datacolada.org/117
datacolada.org/117
June 12, 2024 at 11:35 AM
The fake data were coming from inside the lab
datacolada.org/117
datacolada.org/117
Colada[115] shows the prevalence of pre-registrations in papers published in 2022, with lessons to improve in 2023+
datacolada.org/115
November 13, 2023 at 1:32 PM
Colada[115] shows the prevalence of pre-registrations in papers published in 2022, with lessons to improve in 2023+
datacolada.org/115