Sunday, April 12, 2015

Sharing Intelligence is in the Eye of the Beholder: Investigating Repeated IQ Measurements in Forensic Psychiatry via BrowZine

Intelligence is in the Eye of the Beholder: Investigating Repeated IQ Measurements in Forensic Psychiatry
Habets, Petra; Jeandarme, Inge; Uzieblo, Kasia; Oei, Karel; Bogaerts, Stefan
Journal of Applied Research in Intellectual Disabilities, Vol. 28 Issue 3 – 2015: 182 - 192

10.1111/jar.12120

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Wednesday, April 08, 2015

WJ IV Update Newsletter - The Gf-Gc Composite, the WIIIP, and the ECAD

Click image to enlarge

The WJ IV spring newsletter is now available via this link.  This will be posted at the WJ IV website in the next few weeks.

Wednesday, April 8, 2015
11:16 AM


Sharing Beyond the floor effect on the Wechsler Intelligence Scale for Children - 4th Ed. (WISC-IV): calculating IQ and Indexes of subjects presenting a floored pattern of results via BrowZine

Beyond the floor effect on the Wechsler Intelligence Scale for Children - 4th Ed. (WISC-IV): calculating IQ and Indexes of subjects presenting a floored pattern of results
Orsini, A.; Pezzuti, L.; Hulbert, S.
Journal of Intellectual Disability Research, Vol. 59 Issue 5 – 2015: 468 - 473

10.1111/jir.12150

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Sunday, April 05, 2015

Sharing Developing multivariable thinkers via BrowZine

Developing multivariable thinkers
Kuhn, Deanna; Ramsey, Stephanie; Arvidsson, Toi Sin
Cognitive Development, Vol. 35 – 2015: 92 - 110

10.1016/j.cogdev.2014.11.003

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Kevin McGrew shared A Typing Test To Diagnose Parkinson̢۪s with you.

Kevin McGrew
shared the story, A Typing Test To Diagnose Parkinson's, with you on Flipboard.
A Typing Test To Diagnose Parkinson's
A Typing Test To Diagnose Parkinson's
popsci.com / Alexandra Ossola It's all in the timingWhether it's on a keyboard, a smartphone, or even a credit card reader, you spend a lot of your day typing. Well, researchers at M... read more
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Wednesday, April 01, 2015

Domain generality versus modality specificity: the paradox of statistical learning [feedly]



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Domain generality versus modality specificity: the paradox of statistical learning
// TRENDS IN COGNITIVE SCIENCES - Web of Knowledge

Title: Domain generality versus modality specificity: the paradox of statistical learning
Author(s): Frost, Ram; Armstrong, Blair C.; Siegelman, Noam; et al.
Source: TRENDS IN COGNITIVE SCIENCES, 19 (3): 117-125 MAR 2015
IDS#: CD2WJ. ISSN: 1364-6613
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Sharing The association between heart rate reactivity and fluid intelligence in children via BrowZine

The association between heart rate reactivity and fluid intelligence in children
Gao, Yu; Borlam, Deborah; Zhang, Wei
Biological Psychology, Vol. 107 – 2015: 69 - 75

10.1016/j.biopsycho.2015.03.006

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Friday, March 27, 2015

Sharing The unsolved problems of neuroscience via BrowZine

The unsolved problems of neuroscience
Adolphs, Ralph
Trends in Cognitive Sciences, Vol. 19 Issue 4 – 2015: 173 - 175

10.1016/j.tics.2015.01.007

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Wednesday, March 25, 2015

Why does the WJ IV GIA score often appear lower (or higher) than the average of the component tests? An explanation redux

With the publication of the new WJ IV, an old score issue has again resurfaced.  Examiners have observed that often an individual's overall GIA score is lower than the arithmetic average of the scores for the component tests. This occurs when an individual consistently scores below average on the component tests.   For individuals who score significantly above average on most tests, the GIA is higher than the arithmetic average of the components (the opposite effect).
 
This is not a new phenomenon and is NOT unique to the WJ battery.  I've written about this previously with Joel Schneider.  A link to a special report can be found here.

Joel Schneider has a great explanation (with videos) of this phenomenon at his awesome blog.

Finally, I first wrote about this in 1994 and have re-posted this material (from my first WJ book) for download (PDF file).

In these explanations one will see that the “total does not equal the sum of the parts” phenomenon also occurs on the Wechslers, but it is HIDDEN from view via the fact that the Wechslers use standard scores (mean=10 plus/minus 3) for subtests.  In my 1994 explanation, I present a fictitious case where a child obtains 4's on all WISC-R subtests (-2 SD).  Since a standard score on a subtest of 4 is -2 SD, these scores would be equal to a standard score (mean=100; SD=15) of 70.  The child would have70's for all subtests.  The arithmetic average of all subtests would be 70.  So.....is the WISC-R full scale IQ approximately 70?  No.  It is 59, or 11 points lower!

Bottom line.  This phenomenon has been around for years and is present on all IQ tests.  It is more obvious on the WJ batteries were all subtests and cluster scores are on a common 100/15 scale. This is nothing new.  If  you have been using other batteries (e.g.Wechslers) you simply have not had the opportunity to observe it.
 
I am currently working with a colleague on a special Assessment Service Bulletin to explain this score issue.  I will notify readers of its availability as soon as it is completed.

Blogging lite....Out of the office for two weeks



I am out of the office for two weeks and will only be doing FYI content curation posts - when tine permits.  I shall return.

Article: Training your brain to pay attention


Training your brain to pay attention
http://bioengineer.org/training-your-brain-to-pay-attention/

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Article: European Journal of Developmental Psychology | Developmetrics reports: Instruments and procedures for developmental research


European Journal of Developmental Psychology | Developmetrics reports: Instruments and procedures for developmental research
http://explore.tandfonline.com/cfp/beh/pedp-developmetrics

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Saturday, March 21, 2015

Sharing The relationship between procrastination and academic performance: A meta-analysis via BrowZine

The relationship between procrastination and academic performance: A meta-analysis
Kim, Kyung Ryung; Seo, Eun Hee
Personality and Individual Differences, Vol. 82 – 2015: 26 - 33

10.1016/j.paid.2015.02.038

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