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Category: Measurement

Photo of cross-country skiing in Norway

Friends don’t let friends run moderated cross-country regressions

May 20, 2026 Julia Rohrer 2 Comments

Header image: Moderate cross-country slopes (Photo: By Erik W. Kolstad – Flickr, CC BY 2.0,) Here’s a particular genre of…

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Posted in: Causal inference, Measurement, Statistics
THINK INSIDE THE BOX

Think inside the box, part 1: The guy Euclidean distance told you not to worry about

March 9, 2026 Ruben Arslan Leave a comment

Romance could be so simple if only we were two-dimensional. You just find the closest available partner and go for…

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Posted in: Causal inference, Crosspost, Measurement, Statistics Filed under: causal inference, measurement, simulation, statistics

If you have two measures of the same confounder, you can just include both of them in your regression model

October 13, 2025 Julia Rohrer 3 Comments

Corrigendum: There was an embarrassing mistake in the SEM part of the original version of this blog post which has…

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Posted in: Causal inference, Measurement, Statistics, Teaching
Funny Bunny/Lotti Karotti

The Hare-Brained Generation: Teen mental health crisis or lacklustre record keeping?

December 10, 2024 Ruben Arslan Leave a comment

In The Anxious Generation, Jon Haidt argues that social media is driving a mental health crisis among teens. It’s a…

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Posted in: Causal inference, Error culture, Measurement Filed under: error culture, mistakes, peer review, social media
A treemap of how widely reused psychological measures are.

Oooh baby, rescue me from the jingle jangle jungle

March 22, 2024 Ruben Arslan Leave a comment

Recently, Malte, Taym, Ian and I wrote a short commentary paper on the toothbrush problem for measures in psychology: Everybody…

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Posted in: Error culture, Measurement, Metrics

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