GRPFROM= location of ISGROUPS= = No, before &END

Only use this if you have too many items to put conveniently on one line of the ISGROUPS= control variable.

 

Instructs where to find the ISGROUPS= information.

GRPFROM=N

ISGROUPS= is a control variable before &END (the standard).

 

GRPFROM=Y

ISGROUPS= information follows just after &END, but before the item names. It is formatted exactly like a data record. It is helpful to enter "ISGROUPS=", for reference, where the person name would go.

 

Example: An attitude survey of 10 items with 3 rating scale definitions. Items 1 through 3 on Rating Scale 1, items 4 through 6 on Rating Scale 2 and items 7 through 10 on Rating Scale 3. The ISGROUPS= information is formatted like a data record and entered after &END and before the item names. The responses are in columns 1-10, and the person-id in column 11 onwards.

  NAME1=11  start of person-id

  ITEM1=1  start of responses

  NI=10   number of items

  CODES=12345  valid responses

  GRPFRM=Y  ISGROUPS= formatted like data

  &END

  1112223333  ISGROUPS= information

  Item name 1  item names

  |

  Item name 10

  END NAMES

  2213243223 John Smith first data record

  |


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Rasch Measurement Transactions (free, online) Rasch Measurement research papers (free, online) Probabilistic Models for Some Intelligence and Attainment Tests, Georg Rasch Applying the Rasch Model 3rd. Ed., Bond & Fox Best Test Design, Wright & Stone
Rating Scale Analysis, Wright & Masters Introduction to Rasch Measurement, E. Smith & R. Smith Introduction to Many-Facet Rasch Measurement, Thomas Eckes Invariant Measurement with Raters and Rating Scales: Rasch Models for Rater-Mediated Assessments, George Engelhard, Jr. & Stefanie Wind Statistical Analyses for Language Testers, Rita Green
Rasch Models: Foundations, Recent Developments, and Applications, Fischer & Molenaar Journal of Applied Measurement Rasch models for measurement, David Andrich Constructing Measures, Mark Wilson Rasch Analysis in the Human Sciences, Boone, Stave, Yale
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Coming Winsteps & Facets Events
May 22 - 24, 2018, Tues.-Thur. EALTA 2018 pre-conference workshop (Introduction to Rasch measurement using WINSTEPS and FACETS, Thomas Eckes & Frank Weiss-Motz), https://ealta2018.testdaf.de
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