[IPAC-List] Divergent views of validation

Fred Rafilson fred at iosolutions.org
Wed Sep 1 12:03:54 EDT 2010

I think people often tend to lose sight of the forest through the trees
when considering these 'definitions'. Have we forgotten that validity
is simply a property of the inferences we make from test scores. There
are different types of tests, hence different inferences we make. We
infer from employment test scores that individuals are or are not suited
for a particular job. We infer from college entrance exam scores that
an individual is likely to succeed or not in a particular educational
program. We infer from medical tests that an individual has a
particular illness or not. These are not different types of validity.
In each case, validity refers to the veracity of our inference from the
test result.

Fred M. Rafilson, Ph.D. ~ Chief Executive Officer
888.784.1290 ~ fax: 708.410.1558

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-----Original Message-----
From: ipac-list-bounces at ipacweb.org
[mailto:ipac-list-bounces at ipacweb.org] On Behalf Of Lance Seberhagen
Sent: Tuesday, August 31, 2010 7:24 PM
To: Joel Wiesen
Cc: IPAC-List
Subject: Re: [IPAC-List] Divergent views of validation


Does "validity" in educational testing mean the same as "validity" in
employment testing (or psychological testing in general)? If the
current APA Standards are "flawed" or even "useless," it's possible that

someone is trying to justify something that is not valid under
traditional concepts of validity. Maybe the APA Standards need to be
revised, maybe not, depending on the scientific evidence to support the
proposed changes.

Lance Seberhagen, Ph.D.
Seberhagen& Associates
9021 Trailridge Ct
Vienna, VA 22182
Tel 703-790-0796

On 8/31/2010 7:33 PM, Joel Wiesen wrote:

> For those who like considering non-conventional views...


> Chapters by Joel Michell and Denny Borsboom in an edited book on

> Validity by Lissitz suggest that the prevalent definition of validity,

> as in the current APA Standards, is flawed, perhaps useless. A brief

> review is available at http://www.edrev.info/reviews/rev965.pdf


> Joel



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