Rasch Model

[Salbod]

Dear Friends, Happy New Year!

 

To use the Rasch Model procedure all I need to do is install R Essentials? Is there a data set with a solution I can test my implementation against?

 

Any suggestions will be greatly appreciated.

 

Your friend Stephen Salbod at Pace University, NYC.

[Jon K Peck]

See below
Jon Peck
SPSS, an IBM Company
[hidden email]
312-651-3435

From:	"Salbod, Mr. Stephen" <[hidden email]>
To:	[hidden email]
Date:	01/08/2010 11:12 AM
Subject:	[SPSSX-L] Rasch Model
Sent by:	"SPSSX(r) Discussion" <[hidden email]>

---

Dear Friends, Happy New Year!
 
To use the Rasch Model procedure all I need to do is install R Essentials? Is there a data set with a solution I can test my implementation against?
>>>Just install essentials if you have V18.  With V17, the setup is more complicated but you can still use the command.

The dialog will appear on the Analyze>Scale menu.

I will send you separately a test dataset with the output.

HTH,
Jon Peck

 
Any suggestions will be greatly appreciated.
 
Your friend Stephen Salbod at Pace University, NYC.

[bgreen]

John,

I checked the version 19 at work and did not see a Rasch option in Analyze>Scale menu. Is there an additional SPSS module required.

Is it possible to obtain the test dataset and output that you referred to in this earlier e-mail.

Any assistance is appreciated,

Bob.

[Jon K Peck]

There are three Rasch model related extension commands available from the SPSS Community website (www.ibm.com/developerworks/spssdevcentral).  You can find these in the Statistics collection on that site.  All of these have  both a dialog box interface and standard SPSS Statistics syntax.

STATS GRM
Description: Estimate three-parameter item response model
Version: 1.0.0, Minimum Statistics Version: 17.0.0, Author: AR, IBM SPSS
This package fits the Graded Response model for ordinal polytomous data via an IRT approach. It requires the R plugin. Installation instructions are in the readme file.

STATS IRM
Description: Estimate three-parameter item response model
Version: 1.0.0, Minimum Statistics Version: 17.0.0, Author: AR, IBM SPSS
The STATS IRM command fits three-parameter item response models using the tpm function from the R ltm package. It is assumed that the values of the item variables is 0,1. By default, the procedure produces estimates of the model coefficients, and you can request optional output such as the item fit statistics, plots of the factor scores, and item characteristic curves, and save person-fit statistics to a new dataset.

SPSSINC RASH
R Extension Command for Rasch Models
Version: 1.1.0, Minimum Statistics Version: 17.0.0, Author: AR, IBM SPSS
As of Statistics Version 19, this package is included in the R Essentials.

This package provides a procedure and a dialog box interface for estimation of Rasch models.
It requires the R plug-ins and the R rasch package.

Jon Peck (no "h")
Senior Software Engineer, IBM
[hidden email]
new phone: [phone]




From:        bgreen <[hidden email]>
To:        [hidden email]
Date:        08/21/2011 04:37 AM
Subject:        Re: [SPSSX-L] Rasch Model
Sent by:        "SPSSX(r) Discussion" <[hidden email]>

---

John,

I checked the version 19 at work and did not see a Rasch option in
Analyze>Scale menu. Is there an additional SPSS module required.

Is it possible to obtain the test dataset and output that you referred to in
this earlier e-mail.

Any assistance is appreciated,

Bob.

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