IDEA has already been changed to require RTI...

 

________________________________

From: learningdisabilities-bounces at nifl.gov
[mailto:learningdisabilities-bounces at nifl.gov] On Behalf Of Lucille
Cuttler
Sent: Monday, November 02, 2009 3:41 PM
To: The Learning Disabilities Discussion List
Subject: [LearningDisabilities 4223] Re: descrepancy model

 

Brant, Thank you for your always concise and informative information. 

 

The fact that the discreptancy model is flawed leads to the question:
when will the law be changed to be in accord with science.
Specifically, mandate that literacy instruction must start in the
formative years.  

 

The RTI model?  where can I find more about that? 

 

Lucille Cuttler 

	-----Original Message-----
	From: learningdisabilities-bounces at nifl.gov
[mailto:learningdisabilities-bounces at nifl.gov]On Behalf Of Brant Hayenga
	Sent: Monday, November 02, 2009 11:20 AM
	To: 'The Learning Disabilities Discussion List'
	Subject: [LearningDisabilities 4215] Re: descrepancy model

	Nora:

	 

	Could someone explain to me the reasoning behind this method? 

	 

	It's all about what the state regulations indicate. It is
clearly not logical. The IQ-discrepancy model has been widely
demonstrated to be an unreliable method for identifying students who
have reading disabilities. The discrepancy model has lots of problems,
one of which is that it tends to over identify higher IQ students, and
under identify lower IQ students. Articles about the problems were
published in 1998, but many states continue to at least include the
discrepancy model in their regulations. After I read the attached
article, I was astonished that at the time (2005) most states still
required the use of the discrepancy method. We have to follow the laws,
even if they are deeply flawed. NM recently switched to an RtI model.

	 

	This regression

	effect leads to observed discrepancies

	that are larger, on average, than

	the true discrepancy for individuals

	with IQ scores above 100 and, therefore,

	increases the chances that such

	children will be identified as IQ discrepant.

	For individuals scoring below

	the mean on IQ, the opposite tendency

	occurs, making the observed discrepancy

	smaller than the true discrepancy,

	on average, so that their chances for

	identification as IQ discrepant are

	reduced.

	 

	Brant Hayenga

	Educational Diagnostician 

	Stapleton Elementary/Rio Rancho Middle School

	(505) 896-0667 ext. 226 (District Office)

	(505) 891-8473 ext. 519 (Stapleton Elementary)

	bhayenga at rrps.net

	 

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