STATS_IRM

Fit three parameter item response models

Executes the tpm function from the R ltm package. The variable list specifies the items. It is assumed that the values of these variables is 0,1.

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Requirements

• IBM SPSS Statistics 18 or later and the corresponding IBM SPSS Statistics-Integration Plug-in for R.

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Installation intructions

1. Open IBM SPSS Statistics
2. Navigate to Utilities → Extension Bundles → Download and Install Extension Bundles
3. Search for the name of the extension and click Ok. Your extension will be available.

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Tutorial

Installation Location

Analyze →

  Scale →

    Item Response Model...

UI

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License

• Apache 2.0

Contributors

• Alex Reutter, IBM SPSS