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Available now: The Reasoning and Intelligence Online Test
After 18 months of test development and web engineering, the Reasoning and Intelligence Online Test (RIOT) has been released!
Cognitive strengths and weaknesses are the norm
These results show that it is normal to have some cognitive strengths and weaknesses.
The impact of motivation on IQ: Going… going… (almost) gone
“. . . the Bates and Gignac (2022) studies are the best evidence currently available about the impact of motivation on IQ.”
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%.
RIOT IQ: A New Frontier in Intelligence Assessment
The RIOT fills a void in intelligence testing. Coming in Spring 2025.
More articles by Stephen Breuning that need retraction
What I have found makes it likely that Breuning’s fraud started while he was a graduate student.
Notes on videos of Arthur Jensen defending his work
The most important name in intelligence research in the second half of the 20th century is educational psychologist Arthur Jensen (1923-2012). From the late 1960s until his death, Jensen was the world’s foremost intelligence researcher who singlehandedly made methodological and scientific breakthroughs that greatly advanced intelligence research. I never got to meet Arthur Jensen, but…
Successful task training does not invalidate intelligence tests
Sometimes the fish does not realize that it’s wet. That was my realization this week after I posted a brief description of a study that was recently published. The study (Schneider et al., 2020) showed that a short training video led a randomly selected experimental group to have IQ scores over 15 points higher than…
