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Posts by Harry D. Coulson

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Anchoring the anchor: judgments of both items assimilate in item-based anchoring Anchoring is a prominent judgment bias which causes people’s estimates of uncertain quantities to assimilate towards recently encountered values. Here…

Out now in Cognitive Psychology, paper spearheaded by @davidyoung-psych.bsky.social showing that questions like "Does a torch cost more or less than a laptop?" can generate mutual anchoring effects: www.sciencedirect.com/science/arti...

4 weeks ago 14 6 0 1
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Statistical Rethinking 2026 is done: 20 new lectures emphasizing logical and critical statistical workflow, from basics of probability theory to causal inference to reliable computation to sensitivity. It's all free, made just for you. Lecture list and links: github.com/rmcelreath/s...

4 weeks ago 598 193 11 11

Wish there was a better academic publishing system? Bluesky and its underlying ATProto technology, along with services like @chive.pub and the broader @atproto.science ecosystem, could do the job. #AcademicSky 🧪 leaflet.pub/2f431faf-c12...

1 month ago 19 5 3 0

Welcome to #LoveReplicationsWeek Day 4 - with 4 events!
- Getting your replication report ready by @r2journal.bsky.social
- Large scale replications vs. Meta-analyses by @chbergma.bsky.social
- CREP by @jorowags.bsky.social
- Writing Reproducible Manuscripts by @mklingelhoeferj.bsky.social

1 month ago 4 4 1 0
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I started making this R package 6 years ago. I finally have it in a state I'm happy with, thanks to Claude Code #Rstats github.com/MattCowgill/...

2 months ago 206 41 8 8
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The Decision Process Scale (DPS): Self-report measures of reliance on rules, cost–benefit reasoning, intuition, and deliberation in (moral) decision-making - Behavior Research Methods Understanding how people make decisions in specific situations is a central challenge in (moral) psychology research. Yet there are no existing self-report scales for measuring the process of decision...

Now out in Behavior Research Methods! With @maxmaier.bsky.social & Falk Lieder, we developed the 12-item Decision Process Scale, which measures how much people rely on rules vs. cost-benefit reasoning and intuition vs. deliberation in individual dilemmas.

link.springer.com/article/10.3...

2 months ago 4 2 0 0

Reject button is red
Your sloppiness makes me blue
Yours sicerely
Reviewer #2

#academicvalentine

2 months ago 1 1 0 0
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BAMB! 2026 | Barcelona Summer School for Advanced Modeling of Behavior Intensive training for experienced researchers in cognitive science, computational neuroscience and neuro-AI. Five interconnected modules, expert faculty, hands-on projects. July 12-23, 2026.

Applications for BAMB! 2026 are officially open!

Join us in Barcelona (July 12–23) to master the art of behavioral modeling with our incredible faculty:

@meganakpeters.bsky.social
@marcelomattar.bsky.social
@khamascience.bsky.social
@thecharleywu.bsky.social

Apply now here: www.bambschool.org

2 months ago 27 27 1 3
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Fragebogen | Seite 1

Dear colleagues - we want to better understand perceptions of data fraud and its detection and need your support! Are you currently a #researcher in #psych (or related fields) working with #data? Perfect - please respond to & share this short study (7min): sosci.rlp.net/detection/?r... Thank you!! 🫶

2 months ago 14 17 1 2
Bluesky Network Analyzer Find accounts that you don't follow (yet) but are followed by lots of accounts that you do follow.

Also, been using this to find people to follow for a while:

bsky-follow-finder.theo.io

Just realised that it's also from @theo.io, nice work, and thanks!

2 months ago 0 0 0 0

Nice bluesky tool!

2 months ago 0 0 1 0
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Next Wednesday (Feb 11th) Dr @thecomplexbrain.bsky.social will join to guide us on how to uncover cognitive processes from open-text box data (full details: surl.li/mqtofs). All welcome (in person)!

2 months ago 4 1 1 2
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dplyr 1.2.0 dplyr 1.2.0 fills in some important gaps in dplyr's API: we've added a new complement to `filter()` focused on dropping rows, and we've expanded the `case_when()` family with three new recoding and re...

dplyr 1.2.0 is out now and we are SO excited!

- `filter_out()` for dropping rows

- `recode_values()`, `replace_values()`, and `replace_when()` that join `case_when()` as a complete family of recoding/replacing tools

These are huge quality of life wins for #rstats!

tidyverse.org/blog/2026/02...

2 months ago 465 133 12 12
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Early draft of my ebook for the course:

ianhussey.quarto.pub/reproducible...

2 months ago 28 8 1 0
Screen shot of a youtube video titled "AI.FILL Function Explained: 10X Productivity in Excel with AI" with the caption "Let ChatGPT fill your missing data"

Screen shot of a youtube video titled "AI.FILL Function Explained: 10X Productivity in Excel with AI" with the caption "Let ChatGPT fill your missing data"

Don't you f**king dare.

2 months ago 350 80 32 44
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Researchers often present participants with stimuli that are assumed to reliably and exclusively evoke one, and only one, emotion category. This study shows that this is rarely the case for some widely used stimuli.

doi.org/10.1037/emo0...

2 months ago 2 2 0 0

I built a basic shiny app to check doi's (with help of LLM, Claude Opus). The use case is for when students submit work with fabricated references (I used to randomly check, this will systematically check). Note it comes with no warranties,... . tvpollet.github.io/2026-01-30-D...

2 months ago 7 3 1 1
library(tidyplots)

gene_expression |> 
  head(n = 180) |> 
  tidyplot(x = group, y = expression, color = group) |> 
  add_mean_bar(alpha = 0.3) |> 
  add_sem_errorbar() |> 
  add_data_points_beeswarm(white_border = TRUE) |> 
  adjust_size(width = 25, height = 25) |> 
  split_plot(by = external_gene_name, ncol = 3, nrow = 3)

library(tidyplots) gene_expression |> head(n = 180) |> tidyplot(x = group, y = expression, color = group) |> add_mean_bar(alpha = 0.3) |> add_sem_errorbar() |> add_data_points_beeswarm(white_border = TRUE) |> adjust_size(width = 25, height = 25) |> split_plot(by = external_gene_name, ncol = 3, nrow = 3)

This is how you can split a plot into multiple subplots using #tidyplots 🚀

#rstats #dataviz #phd

2 months ago 19 1 0 1
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Join us for the LOVE REPLICATIONS WEEK from March 2 - 6 with talks on reproductions, replications, how to find them, how to conduct them, how to have them conducted on your study, where to publish them, and much more!

2 months ago 22 16 3 1

Really nice paper by @neillewisjr.bsky.social doi.org/10.1037/amp0...

2 months ago 4 1 1 0
Why Risk it, When You Can {rix} it: A Tutorial for Computational Reproducibility Focused on Simulation Studies

Why Risk it, When You Can {rix} it: A Tutorial for Computational Reproducibility Focused on Simulation Studies

May be of interest to the reproducibility folks: New tutorial on computational reproducibility for simulation studies just dropped! felipelfv.github.io/Why-risk-it-...

by @felipefv.bsky.social, Jason Geller & @brodriguesco.bsky.social

2 months ago 62 17 6 0

Highly recommend Replication Games!

Key takeaways:
1. Great way to learn about other psych methods
2. Improve on stats
3. More enjoyable with others
4. Realised my own code needs improving after being on the other side of a paper (replicating)

Thanks @fialalenka.bsky.social @rujoanna.bsky.social

2 months ago 3 2 1 1

The Iowa Gambling Task is an extreme example of Jingle Fallacy and schmeasurement.

In 100 articles we found 244 different ways of scoring it, 177 were never reused. Correlations between them range -.99 to .99.

At the same time, we show meta-analyses combine these results as if they’re equivalent.

2 months ago 176 67 5 4
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RegCheck RegCheck is an AI tool to compare preregistrations with papers instantly.

Comparing registrations to published papers is essential to research integrity - and almost no one does it routinely because it's slow, messy, and time-demanding.

RegCheck was built to help make this process easier.

Today, we launch RegCheck V2.

🧵

regcheck.app

2 months ago 174 90 8 6
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This paper in Management Science has been cited more than 6,000 times. Wall Street executives, top government officials, and even a former U.S. Vice President have all referenced it. It’s fatally fl...

This paper in Management Science has been cited more than 6,000 times. Wall Street execs, top govt officials, and even a former U.S. Vice President have all referenced it. It’s fatally flawed, and the scholarly community refuses to do anything about it.
statmodeling.stat.columbia.edu/2026/01/22/a...

2 months ago 28 13 0 2
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Most popular decision-making models assume that cognitive processes are static over time. In our new paper in Psych Review, we offer a simple extension to evidence accumulation models that lets researchers account for systematic changes in parameters across time 📈

psycnet.apa.org/fulltext/202...

3 months ago 28 9 1 2
To encourage reuse of our data, Pew Research Center, with support from the John Templeton Foundation, invites researchers to submit proposals for new research publications that use one or more of the following datasets (collectively, Datasets) from the Global Religious Futures (GRF) project:  Global Restrictions on Religion 2007-2022 dataset. This cumulative dataset includes measures of government restrictions on religion and social hostilities involving religion in nearly 200 countries and territories. Spring 2024 Survey. This dataset includes measures of religion and spirituality in 35 countries. (Comparable data was also collected in 2023 and 2024 for the United States. The downloadable materials which accompany the international dataset include additional information about U.S. data.) Dataset of Global Religious Composition Estimates for 2010 and 2020. This dataset includes estimates of the size of seven major religious groups in more than 200 countries and territories. We encourag

To encourage reuse of our data, Pew Research Center, with support from the John Templeton Foundation, invites researchers to submit proposals for new research publications that use one or more of the following datasets (collectively, Datasets) from the Global Religious Futures (GRF) project: Global Restrictions on Religion 2007-2022 dataset. This cumulative dataset includes measures of government restrictions on religion and social hostilities involving religion in nearly 200 countries and territories. Spring 2024 Survey. This dataset includes measures of religion and spirituality in 35 countries. (Comparable data was also collected in 2023 and 2024 for the United States. The downloadable materials which accompany the international dataset include additional information about U.S. data.) Dataset of Global Religious Composition Estimates for 2010 and 2020. This dataset includes estimates of the size of seven major religious groups in more than 200 countries and territories. We encourag

Please share: Pew Research Center will provide $3,000 each for 19 new papers using our recent global datasets. We encourage reuse of our Pew-Templeton Global Religious Futures data!
www.pewresearch.org/2026/01/16/seeking-resea...

3 months ago 137 110 1 6

⏳ Just over 2 weeks left to apply! ⏳

We are looking for talented Cognitive Neuroscientists to join our team at Trinity College Dublin for postdoc positions funded by a European Research Council (ERC) Consolidator grant.
www.jobs.ac.uk/job/DPV296/r...

www.ktsetsoslab.net/_files/ugd/0...

3 months ago 23 20 2 0

Come join us in Zurich! #openscience #replications #reproductions

4 months ago 0 1 0 0