Years ago, Matthew Page was a student in the School of Psychological Science at La Trobe University (in Melbourne), working with Fiona Fidler and me. He somehow (!) became interested in research methods and practices, especially as related to meta-analysis.…
Introduction to the New Statistics
The online community and blog for ITNS
Category: Replication
The Perils of MTurk, Part 1: Fuel to the Publication Bias Fire?
It’s not going to be a popular opinion, but I think MTurk has become a danger to sound psychological science. This breaks my heart. MTurk has helped transform my career for the better. Moreover, MTurk participants are amazing: they are…
We’ve Been Here Before: The Replication Crisis over the Pygmalion Effect
[UPDATE: Thanks to twitter I came across this marvelous book(Jussim, 2012) that does a great job explaining the Pygmalion effect, the controversy around it, and the overall state of research on expectancy effects. I’ve amended parts of this post based on…
Measuring Heterogeneity in Meta-Analysis: The Diamond Ratio (DR)
This is a post about the Diamond Ratio (DR), a simple measure of the extent of heterogeneity in a meta-analysis. We introduced the DR in ITNS. But first, some background. Fixed Effect (FE) model for meta-analysis The diamond at the…
Sample-size planning – a short video
Here’s a short talk I gave at the 2017 Society for Neuroscience meeting on sample size planning. The talk discusses: Why you should plan your sample sizes in advance What not to do (how some common approaches can lead you…
Open Science: This Time in Orthodontics
Last month it was the Antarctic Scientists, this month the Orthodontists, and once again I had a most enjoyable time. Lindsay my wife and I are just back from 5 days in Sydney. I was speaking at the 26th Australian…
The complexity of measuring a ‘simple’ behavior (novelty preference tests seem terrible)
The replication crisis isn’t just about sample size and statistical inference. Another key issue is measurement: the process of turning observations into quantitative statements about our sample. It’s tricky. In many cases we’ve run before we learned to walk, adopting methods…
Pre-Print – The New Statistics for Better Science
We have a new preprint on how the New Statistics can save the world (sort of): https://psyarxiv.com/3mztg It’s for a special issue of the American Statistician on the them of “Beyond p values”. We welcome your feedback on via email, twitter (@TheNewStats),…
Not replicable, but citable
What happens to the reputation of a paper when the results reported cannot be replicated? Here’s a graph of citations/year from two studies–an original and a replication study that found little to no effect. It’s just one example, but it…
It’s not all bad news
Here’s a cool pre-print examining the quality of evidence in studies of the genetics of short-term memory in fruit flies (Tumkaya, Ott, & Claridge-Chang, 2018). The paper conducts a meta-analysis of different genes that have been linked to altered olfactory…
New Stats blog: Cochrane: Matthew Page Wins the Prize! https://t.co/cKcbmqllPM
Left handedness is a choice, one I made in kindergarten so i could use the cool green-handled scissors.
Whoa! Researchers used @uk_biobank to look for genes linked to left-handedness in 361,194 people. They came up pretty much dry, with past candidates downgraded to false positives. https://t.co/JZhwjFFgCG
New Stats blog: Draw Pictures to Improve Learning? https://t.co/28ZSUIpY3I
I wrote a blog post about a bunch of ways to generate/plot uncertainty estimates https://t.co/OdumNDpQtS
New Stats blog: ITNS–The Second Edition! https://t.co/2jjIWnesfI
Top
Recent Comments