Setting time limits for tests: Lessons learned
For most tests, it is best to have a time limit that is tight enough to be practical, but not so low that the test starts measuring mental speed. The challenge is striking that balance.
Comparing Cronbach’s alpha and McDonald’s omega reliability values
When subtests consist of well constructed items, the underestimate from using Cronbach’s alpha is usually pretty small — about 4.5%.
The non sequitur of Lewontin’s fallacy
Nobody who makes Lewontin’s argument should be taken seriously.
The gremlins that strengthen stereotype threat
Instead of an insightful view into the problems of stereotype threat research, I instead found an article that itself is plagued with flaws.
What’s new for STATISTICS FOR THE SOCIAL SCIENCES, 2nd edition
Today, I submitted the manuscript for the second edition of my statistic textbook, Statistics for the Social Sciences: A General Linear Model Approach. This book has been a labor of love, and it has been a great pleasure to revisit the text and make revisions. The first edition has been well received, with the comments…
