Total scores reported = Yes

Elements with extreme scores (zero, perfect) do not provide information about the measures of other elements and so are dropped from the estimation. Estimates for extreme scores are done separately with Xtreme score=.


Totalscore = No (default)

Report scores after omission of responses that are part of extreme scores

Totalscore = Yes

Report scores including all responses.


Example: For the KCT data.

Totalscore = No omits observations in other extreme scores. It produces:

Table 7.1.1  Children Measurement Report  (arranged by mN).


|  Obsvd  Obsvd  Obsvd  Fair-M|        Model | Infit      Outfit   |Estim.|                     |

|  Score  Count Average Avrage|Measure  S.E. | MnSq ZStd  MnSq ZStd|Discrm| Nu Children         |


|     11     14      .8    .98|   3.72   .94 | 1.95  1.6   .88  2.4| -.04 | 27 Girl             |


Totalscore = Yes includes extreme observations in all scores. It produces:

Table 7.1.1  Children Measurement Report  (arranged by mN).


|  Total  Total  Obsvd  Fair-M|        Model | Infit      Outfit   |Estim.|                     |

|  Score  Count Average Avrage|Measure  S.E. | MnSq ZStd  MnSq ZStd|Discrm| Nu Children         |


|     14     18      .8    .98|   3.72   .94 | 1.95  1.6   .88  2.4| -.04 | 27 Girl             |

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Rasch Publications
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
in Spanish: Análisis de Rasch para todos, Agustín Tristán Mediciones, Posicionamientos y Diagnósticos Competitivos, Juan Ramón Oreja Rodríguez
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