I just checked if this retracted study with the implausibly large effect is an obvious outlier in a meta-analysis. No, it isn't
There is one with a much larger effect size
journals.plos.org/plosone/arti...
Fortunately, Matt Williams already flagged it.
pubpeer.com/publications...
Martin Plöderl
“That’s way too big to have that kind of effect,” Williams recalled thinking as his first impression of the study. “Because I love to procrastinate instead of continuing marking, I then looked up the paper and started reading it."
In the fall of 2024, Matt Williams was grading papers at Massey University in New Zealand when he noticed something off in a study one of his students had cited. The study, published in 2016, repor…
