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Author: Julia Rohrer

Reviewer notes: That’s a very nice mediation analysis you have there. It would be a shame if something happened to it.

March 20, 2025 Julia Rohrer 15 Comments

Mediation analysis has gotten a lot of flak, including classic titles such as “Yes, but what’s the mechanism? (Don’t expect…

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Posted in: Causal inference, Statistics, Teaching
Inspirational quote: A goal is not always meant to be reached, it often serves simply as something to aim at. Bruce Lee (or maybe somebody else)

Reviewer notes: Avoid any ambiguity about analysis aims

February 17, 2025 Julia Rohrer

For any central statistical analysis that you report in your manuscript, it should be absolutely clear for readers why the…

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Posted in: Causal inference, Reviewer notes, Teaching Filed under: peer review

Reviewer notes: In a randomized experiment, the pre-post differences are not effect estimates

January 22, 2025 Julia Rohrer 4 Comments

Reviewer notes are a new short format with brief explanations of basic ideas that might come in handy during (for…

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Posted in: Causal inference, Reviewer notes, Statistics, Teaching
Sampling distribution of the mean with an observed mean and the resulting confidence interval indicated by a shruggie emoji

Why you are not allowed to say that your 95% confidence interval contains the true parameter with a probability of 95%

December 5, 2024 Julia Rohrer 7 Comments

A shibboleth is a custom, such as a choice of phrasing, that distinguishes one group of people from another. The…

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Posted in: Statistics, Teaching
A screenshot of the first page of "Writing the Empirical Journal Article" by Daryl J. Bem, whose name has been crossed out and cruedly replaced by "Julia Rohrer"

Writing about technical topics in an accessible manner

December 1, 2024 Julia Rohrer 5 Comments

A wise man – I’m quite sure it was Brian Wansink – once pointed out that it is impossible to…

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Posted in: Teaching, Writing

Idiographic Approaches in Psychology: Hold your horses

October 28, 2024 Julia Rohrer

There have been persistent calls spurring psychologists to do more “idiographic” research, starting even before Peter Molenaar’s “Manifesto on Psychology…

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Posted in: Causal inference, Statistics
"Figur 4. Vorwärts- und Rückwärts-Beugen"

Let’s do statistics the other way around

August 27, 2024 Julia Rohrer 3 Comments

Summer in Berlin – the perfect time and place to explore the city, take a walk in the Görli, go…

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Posted in: Causal inference, Statistics, Teaching

Sometimes a causal effect is just a causal effect (regardless of how it’s mediated or moderated)

June 26, 2024 Julia Rohrer 1 Comment

TL;DR: Tell your students about the potential outcomes framework. It will have (heterogeneous) causal effects on their understanding of causality…

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Posted in: Causal inference, Statistics, Teaching

Is [insert statistical approach] good or bad? Let’s settle the debate, once and for all

April 13, 2024 Julia Rohrer

I don’t like getting into fights and sometimes I am concerned this keeps me from becoming a proper methods/stats person.…

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Posted in: Uncategorized

A casual but causal take on measurement invariance

January 10, 2024 Julia Rohrer

Testing for measurement invariance is one of those things where researchers roughly fall into two categories. Either they consider it…

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Posted in: Statistics

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  • Reviewer notes: That’s a very nice mediation analysis you have there. It would be a shame if something happened to it.
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  • Reviewer notes: Avoid any ambiguity about analysis aims
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  • Julia Rohrer on Reviewer notes: That’s a very nice mediation analysis you have there. It would be a shame if something happened to it.
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  • Julia Rohrer on Reviewer notes: That’s a very nice mediation analysis you have there. It would be a shame if something happened to it.
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