Showing posts with label psychometrics. Show all posts
Showing posts with label psychometrics. Show all posts
Monday, July 27, 2026

Combining multiple intelligence test scores (IQs) into a grand psychometrically sound estimate. Joel Schneider’s free on-line web app.

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In an earlier post in March, I alerted readers to a new journal publication that presented a psychometrically sound rational and method for ...
Monday, July 16, 2018

What is an applied psychometrician?

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I wear a number of hats within the broad filed of educational psychology.  One is that of an applied psychometrician.  Whenever anyone asks ...
Thursday, July 12, 2018

Great psychometric resource: The Wiley Handbook of Psychometric Testing.

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I just received my two volume set of this excellent resource on psychometric testing.  There are not many good books that cover such a bro...
Saturday, March 17, 2018

The importance of differential psychology for school learning: 90% of school achievement variance is due to student characteristics

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This is why the study of individual differences/differential psychology is so important. If you don’t want to read the article you can watc...
Monday, December 05, 2016

Human intelligence research four-levels of explanation: Connecting the dots - an Oldie-But-Goodie (OBG) post

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Click on image to enlarge. Research that falls under the breadth of the topic of human intelligence is extensive. For decades I have...
Tuesday, September 16, 2014

Good intro overview article on exploratory factor analysis

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This is a nice overview article of exploratory factor analysis. It includes a nice table of "rules of thumb" and an appendix wit...
Wednesday, June 25, 2014

The WJ IV Battery: Select Technical and Psychometric Information Overview. A Slide show

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WJ IV Battery: Select Technical and Psychometric Information Overview from Kevin McGrew  
Tuesday, May 27, 2014

Victory for psychometrics in Hall v Florida "bright line" (ignoring SEM) SCOTUS decision re Atkins MR/ID death penalty cases

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This morning SCOTUS rectified the long standing "bright line" (ignoring SEM) problem with Atkins ID/MR cases in Florida.  Clic...
Monday, August 27, 2012

For the psychometrically inclined...and psychologists who should be

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Very good food for thought regarding the need for progress in applied psychological measurement. Double click on image to enlarge. Posted us...
Friday, August 24, 2012

IQ Score Interpretations in Atkins MR/ID Death Penalty Cases: The Good, Bad and the Ugly

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I just uploaded the following PPT presentation to my SlideShare account--- IQ Score Interpretation in Atkins MR/ID Death Penalty Cases: The...
Saturday, May 12, 2012

Sampling error--the law of small numbers as per "Thinking fast and slow"

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Nice explanation of problem with sampling error in small samples in Kahneman's highly regarded book. Click on I age to enlarge Posted u...
Monday, March 12, 2012

Research Byte: Implications of select psychometric issues for neuropsych assessment

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Interesting food for thought in this article. Click on image to enlarge - Posted using BlogPress from Kevin McGrew's iPad
Friday, January 13, 2012

How to estimate best IQ score if someone has taken multiple IQ tests: The psychometric magic of Dr. Joel Schneider

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Dr. Joel Schneider has posted an excellent explanation on how to estimate a person's "true IQ score" when a person has taken ...
Wednesday, January 11, 2012

Sijtsma on the "Future of Psychometrics: Ask what psychometrics can do for psychology"

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Click on image to enlarge - Posted using BlogPress from Kevin McGrew's iPad
Saturday, October 08, 2011

Research byte: New approach to determining the number of factors in EFA

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Double click on image to enlarge - iPost using BlogPress from Kevin McGrew's iPad
Tuesday, October 04, 2011

Dr. Doug Detterman's bytes: Psychometric validity

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I have been remiss (busy) in my posting of Dr. Doug Detterman's bytes . Here is a new one on validity Validity is the extent to which a...
Tuesday, September 20, 2011

IRT-based clinical psychological assessment and test development

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IRT based test development has been one of the most important psychometric developments during the past few decades. This is a followup to ...
Thursday, September 15, 2011

Book Nook: An Introduction to Psychometrics

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People always ask me for recommendations for a good intro book on psychometrics. Until recently, there have been no such books. There are ...
Saturday, September 10, 2011

Research Bytes: Bi-factor item factor analysis and CFA model fit/misfit

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For my quant readers. Double click on images to enlarge. - iPost using BlogPress from Kevin McGrew's iPad
Sunday, August 28, 2011

Research byte: Another good overview article on IRT test development methods--relevance to clinical assessment

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Double click on image to enlarge - iPost using BlogPress from Kevin McGrew's iPad intelligence IQ tests IQ testing IQ scores CHC int...