Can you help? Surely someone has written about this question? Please let me know where! In the paired design, the two measures, for example Pretest and Posttest, are usually positively correlated. The SD of the paired differences (sdiff), is usually …
The Simple Paired Design: How Does the Correlation Relate to SD(diff)? Read more »
How can I find good recommendations for books on a topic I’m interested in? shepherd.com is a new option to try. It’s a database of brief comments by authors about (i) themselves, (ii) one of their own books, and (iii) …
How Do You Find a Good Book to Read? Try shepherd.com Read more »
A few days ago I gave a talk hosted by Valentin Amrhein and his colleagues at the Department of Environmental Sciences, University of Basel. Many thanks to Valentin, Dieter Ebert, and colleagues for the invitation. My slides, which include lots …
Estimation, Intervals, & Beyond: Talking to Basel Read more »
Trying to debunk a conspiracy theory by presenting facts and evidence often doesn’t work ☹ Perhaps prebunking, by giving insight into why fake news can appear credible, might help? To put it another way, psychological inoculation presents a mild form …
In ITNS we used ‘dunbiased’ to refer to the debiased estimate of Cohen’s δ, which is Cohen’s standardised effect size in the population. In UTNS I used ‘dunb’. But now ‘Hedges’s g’ seems to be gaining currency as a label …
What Should We Call Our Estimate of Cohen’s δ: d-unbiased, Hedges’ g, or Something Else? Read more »
We’re delighted to release precision for planning (PfP), the sixth component of esci web. This completes esci web as currently planned. To access, click esci web and then the precision for planning button. Please let’s know how you like it, …
What N Will Give Me the Precision I Want? Gordon’s New Pictures Tell All Read more »
Here comes one more goodie from Gordon Moore: dance r. This follows his wonderful dances, introduced here, and three other goodies introduced here. Have a play with dance r, the latest component in esci web. Please tell us what you think. As you may …
Gordon Does It Again: See the Correlations Dance Read more »
I’m delighted to say we’re releasing three new goodies from Gordon Moore: distributions, d picture, and correlation. These follow his wonderful dances introduced here. As I explained, ITNS2 will be accompanied by Bob’s data analysis software, esci, in R, and Gordon’s web-based …
Goodies from Gordon: ‘distributions’, ‘d picture’, ‘correlation’–all part of ‘esci web’ Read more »
…as I was asked recently. A question every author loves to hear. The short answer is ITNS, preferably to be followed by ITNS2, coming in 2021 we hope. Here’s an overview: ITNS, second edition, due 2021 Main changes from the …
A while back I posted (here) about the Diamond Ratio (DR), which is our simple visual indicator of the extent of heterogeneity in meta-analysis. (See ITNS, Chapter 9 for more on the DR.) I reported that Max Cairns, a PhD …