KABC-II IQ subtest names and descriptions

For those unfamiliar with the content of the KABC-III IQ test battery, I extracted the table below from a journal article. It lists the individual tests with brief descriptions. Clicking on image should take you to a larger more readable version.




- iPost using BlogPress from my Kevin McGrew's iPad
intelligence IQ tests IQ testing IQ scores CHC intelligence theory CHC theory Cattell-Horn-Carroll human cognitive abilities psychology school psychology individual differences cognitive psychology neuropsychology psychology special education educational psychology psychometrics psychological assessment psychological measurement IQs Corner neuroscience neurocognitive cognitive abilities cognition

IQ test battery publication timeline: Atkins MR/ID Flynn Effect cheat sheet

As I've become involved in consulting on Atkins MR/ID death penalty cases, a frequent topic raised is that of norm obsolescence (aka, the Flynn Effect). When talking with others I often have trouble spitting out the exact date of publication of the various revisions of tests, as I keep track of more than just the Wechsler batteries (which are the primary IQ tests in Atkins reports). I often wonder if others question my expertise...but most don't realize that there are more IQ batteries out there than just the Wechsler adult battery....and, in particular, a large number of child normed batteries and other batteries spanning childhood and adulthood. Thus, I decided to put together a cheat sheet for myself..one that I could print and have in my files. I put it together in the form of a simple IQ battery publication timeline. Below is an image of the figure. Double click on it to enlarge.

An important point to understand is that when serious discussions start focusing on the Flynn effect in trial's, most often the test publication date is NOT used in the calculation of how obsolete a set of test norms are. Instead, the best estimate of the year the test was normed/standardized is used, which is not included in this figure (you will need to locate this information). For example, the WAIS-R was published in 1981...but the manual states that the norming occurred from May 1976 to May 1980. Thus, in most Flynn effect discussions in court cases, the date of 1978 (middle of the norming period) is typically used. This makes recall of this information difficult for experts who track all the major individually administered IQ batteries.

Hope this helpful...if nothing else...you must admit that it is pretty :)  Click on image to view.






- iPost using BlogPress from my Kevin McGrew's iPad

intelligence intelligence testing Atkins cases ICDP blog psychology school psychology neuropsychology Forensic psychology criminal psychology criminal justice death penalty capital punishment ABA IQ tests IQ scores adaptive behavior AAIDD mental retardation intellectual disability Flynn effect

AP101 Brief #2: IQ test battery descriptive comparison information

Although the adult Wechsler intelligence battery (WAIS-R; WAIS-III; WAIS-IV) is the most frequently used intelligence battery in Atkins cases (often called the "gold standard"), other intelligence tests are starting to show up in psychological reports.  These other tests are either newer intelligence batteries (first editions published in the past 30 years), revisions of older batteries (e.g., Stanford-Binet), or are tests reflecting scores from a test taken while a defendent was in school (and the battery only providesnorms for school-age populations).  Over time I will be presenting information that will allow readers to better understand the similarities and differences of these different batteries, with a particular focus on why they may provide different scores.

To kick of this effort, this post presents basic background information re: the most popular comprehensive intelligence batteries,

First, as I've mentioned before, in 2002 a national panel of experts made recommendations re: the use of intelligence and adaptive behavior tests in MR/ID eligibility determination (for SSA benefits).  In that publication a table was presented that listed the comprehensive intelligence batteries deemed suitable for MR/ID determination.  The table can be viewed by clicking here.  Only three of the batteries listed at that time had adult norms.  Also, many of the tests have since been revised/renormed--thus making the basic information in the table out-of-date.  The important point is that there are other intelligence tests (beyond the Wechsler "gold standard") that have been deemed appropriate for MR/ID identification/Dx/classifcation by a national panel of experts.

Floyd, Clark and Shadish (2008) reported on the exchangability of full scale IQ scores from most of the major comprehensive intelligence batteries.  In that article they provide an excellent descriptive summary table of the major characteristics of the respective test batteries.  This table is reproduced below...with a few annotations. [Click here for a larger version of the table image - when image appears, click on it to make it bigger].



Finally, the Floyd et al. article makes reference to supplementary material  availbale upon request.  One piece of this supplementary information is a lengthy footnote describing the various full scale IQ scores (which are typically the primary focus in Atkins cases...for good or bad) available from the different IQ batteries.  I've reproduced the footnote (with embedded URL links to the product descripton web page of each respective publisher)--click here to view.

Thats enough for now.  This is just a start in ICDPs attempt to provide comparative information on intelligence test results that may appear in psychological reports reviewed in Atkins cases.

Technorati Tags: psychology, school psychology, educational psychology, forensic psychology, criminal psychology, criminal justice, neuropsychology, intelligence, MR, ID, mental retardation, intellectual disability, IQ, IQ test, IQ scores, psychometrics, Atkins cases, Atkins hearings, capital punishment, death penalty