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Category: Teaching

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
"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
Multiverse Brain Meme

Mülltiverse Analysis

March 7, 2021 Julia Rohrer 1 Comment

Psychologists like their analyses like I like my coffee: robusta. Results shouldn’t change too much, no matter which exclusion criteria…

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Posted in: Statistics, Teaching Filed under: multiverse analysis, robustness checks

On the origin of psychological research practices, with special regard to self-reported nostril width

July 31, 2020 Julia Rohrer 5 Comments

The longer I have been in psychological research, the more I wonder about why we do things the way we…

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Posted in: Statistics, Teaching

Student research projects and GDPR

July 25, 2018 Malte Elson

Expra. Every German psychologist did an Expra during their undergrad, usually in their 2nd or 3rd semester. Expra is short…

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Posted in: Ethics, Law, Teaching

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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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  • 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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