[Rasch] psychometrics to measure dynamicity

Parisa Daftari Fard pdaftaryfard at yahoo.com
Sat Jul 31 03:17:56 EST 2010



Thank you prof. Bond and Dr. Commons,
 
Also, these learners took pre test and post test. Can I use pretest as baseline score. 
 
Second, in Regression, what shall I use? Scaled score or raw score 
Third, Is there any article which has followed the same procedure I can refer to.
 
 
I appreciate your help in advance.
Best,
Parisa

--- On Fri, 7/30/10, Michael Lamport Commons <commons at tiac.net> wrote:


From: Michael Lamport Commons <commons at tiac.net>
Subject: Re: [Rasch] psychometrics to measure dynamicity
To: "Parisa Daftari Fard" <pdaftaryfard at yahoo.com>
Cc: "rasch list" <rasch at acer.edu.au>
Date: Friday, July 30, 2010, 8:27 PM


What we do is to Rasch scale a large number of performances that range across a large number of stages as baseline.  The range is very necessary to get a good scaling.  Michael Linacre and Trevor Bond could advise but we see two ways to go after that.  1.  Is to re Rasch the new and the old data together.  We then use the the new scores as a dependent variable and predict them in a multiple regression with the old scores and any intervention variables.
My Best,

Michael Lamport Commons, Ph.D.
Assistant Clinical Professor

Department of Psychiatry
Harvard Medical School
Beth Israel Deaconess Medical Center
234 Huron Avenue
Cambridge, MA 02138-1328

Telephone (617) 497-5270
Facsimile (617) 491-5270
Cellular	(617) 320–0896
Commons at tiac.net
http://dareassociation.org/



On 7/30/2010 11:48 AM, Parisa Daftari Fard wrote: 





Dear Dr. Commons,
Thank you for your question. What I am interested in is to see how Dynamic assessment (DA) would affect (1) learners' performance on the same items over time and (2) the hierarchical relation of the items in each time performance. There are certain learners whose performance remained constant (either correct or incorrect) there are also some whose performance changes either for good or bad.
 
I hope I am clear now.
Thank you again for your help in advance.
 
Best,
Parisa 
 
Parisa Daftarifard
PhD student of EFL 
Islamic Azad University of Science and Research


--- On Fri, 7/30/10, Michael Lamport Commons <commons at tiac.net> wrote:


From: Michael Lamport Commons <commons at tiac.net>
Subject: Re: [Rasch] psychometrics to measure dynamicity
To: "Trevor Bond" <trevor.bond at jcu.edu.au>
Cc: "Parisa Daftari Fard" <pdaftaryfard at yahoo.com>, "rasch list" <rasch at acer.edu.au>
Date: Friday, July 30, 2010, 7:51 PM


Please expand.  Do you look at a series of interviews and then Rasch the stage scores?
My Best,

Michael Lamport Commons, Ph.D.
Assistant Clinical Professor

Department of Psychiatry
Harvard Medical School
Beth Israel Deaconess Medical Center
234 Huron Avenue
Cambridge, MA 02138-1328

Telephone (617) 497-5270
Facsimile (617) 491-5270
Cellular	(617) 320–0896
Commons at tiac.net
http://dareassociation.org/



On 7/30/2010 1:04 AM, Trevor Bond wrote: 
 For example, in Dynamic assessment, where tutor attempts to provide feedback 
(first implicitly then explicitly) according to learner's responsiveness, the trait is 
not static but dynamic


A Piagetian interview is one such dynamic technique; our research shows pretty 
good Rasch evidence...

best
TGB

Prof Trevor G BOND
Adjunct Professor
School of Education
James Cook University
AUSTRALIA
mob: +61 416 82 70 83
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