#statstab #497 On the Statistical Analysis of Experiments
With Manipulation Checks

Thoughts: All psychologists reading this title will panic. Yes, you can't just delete data and assume all is well.

#assumptions #QRPs #estimand #causalinference #ITT #ATE #bias

https://journals.sagepub.com/doi/pdf/10.1177/25152459241297537

#statstab #470 Low power bias {shiny} app

Thoughts: easily show what conducting an underpowered study would do to your effect size (type M error).

#teaching #bias #power #typeM #typeS #QRPs #underpowered #samplesize

https://c-jaksic.shinyapps.io/small_power_bias/

#statstab #469 We should focus on the biases that matter

Thoughts: I recommend this entire issue with the discussions and reply. They are a great insight into how science develops.

#metascience #bias #publicationbias #QRPs #TES

http://dx.doi.org/10.1016/j.jmp.2013.06.001

#statstab #467 Replication, statistical consistency, and publication bias

Thoughts: Is the replication of a a finding the "gold standard" for scientific discovery? Maybe not.

#replication #metascience #metapsychology #statistics #bias #QRPs #nhst

https://doi.org/10.1016/j.jmp.2013.02.003

#statstab #456 Bestiary of Questionable Research Practices in Psychology

Happy new year! ✨

Thoughts: Starting the year with a resource to make you more cynical in 2026.

#QRPs #phacking #metascience #research #ethics

https://journals.sagepub.com/doi/10.1177/25152459251348431

#statstab #442 Understanding uncertainty in school league tables

Thoughts: Rankings are virtually meaningless, especially neighbour values.

#ranking #comparison #uncertainty #QRPs #education #academia

https://research-information.bris.ac.uk/ws/portalfiles/portal/40324984/leckie2011fs.pdf

#statstab #396 If researchers find Cohen’s d = 8, no they didn’t

Thoughts: Sometimes an effect is so impressive that its unbelievable.

#effectsize #cohend #QRPs #sesoi

https://mmmdata.io/posts/2025/07/if-researchers-find-cohens-d-8-no-they-didnt/

#statstab #381 In psychology everything mediates everything

Thoughts: Another great explanation of the pitfalls of mediation analysis. Mediation is not a simple procedure and require strong theory.

#mediation #QRPs #correlation #regression #PROCESS

https://steamtraen.blogspot.com/2020/04/in-psychology-everything-mediates.html?m=1

#statstab #369 Don't Trust Internal Meta-Analysis

Thoughts: I don't agree with all the assumptions, but interesting to know how bad these can be.

#metaanalysis #QRPs #minimeta #datacolada #falsepositive #replication

https://datacolada.org/73

#statstab #366 Type M error might explain Weisburd’s Paradox

Thoughts: Learn about type M error while you learn about the issues in criminology!

#replication #typeM #typeS #QRPs #paradox #power #effectsize #errorrate

https://sites.stat.columbia.edu/gelman/research/published/weisburd_28.05.2017.pdf