Brendan NyhanJul 5, 2023

Friends don't let friends ruin their experiments by dropping participants who fail manipulation checks - new illustration in JEPS https://tinyurl.com/3zxt6u6w

See our AJPS - How Conditioning on Posttreatment Variables Can Ruin Your Experiment and What to Do about It
https://tinyurl.com/yz4dbbuw

Show threadTom Stafford
@brendannyhan surely this should be ..."by dropping participants who fail [post-treatment] manipulation checks"?
Jul 10, 2023 at 6:31amWeb
Show threadBrendan NyhanJul 10, 2023
@tomstafford for sure. by definition, manipulation checks have to be post-treatment! (unless you have space-time powers I do not...)
Show threadTom StaffordJul 10, 2023
@brendannyhan sorry - my bad! In my head I read "attention checks", which can be pre treatment. Apologies