Anchor output file = " "

Form the Output Files menu, click on Anchor Output File. Facets writes out a new specification file containing the input specifications for this analysis. This file omits any specifications entered as extra specifications, but includes the final estimated measures for all elements and scales. Also produced by Anchorfile=



Flag measures as anchor values: includes ",A" after the facet labels to indicate that all reported estimates are anchor values. These anchor values can be used as starting values for slightly different later runs. For this, uncheck "Flag measures as anchor values" or edit the ",A"'s out of the first line of each facet in the Labels= specifications and out of the category lines of Rating (or partial credit) scale=.


Current setting of every specification:

checked - this produces an anchorfile with every specification set to its current value. This is useful if you want a full record of the specifications for this analysis.

unchecked - this produces an anchorfile similar to the original specification file.


Include data (if any) in the specification file: Is the data in the specification file after "Data=" to be included in the anchorfile?


Example: Using an edited version of Guilford.txt. Anchorfile=Guilford.anc - "Current setting" is unchecked.


Title= Ratings of Scientists (Psychometric Methods p.282 Guilford 1954)


Score file=GUILFORD.SC ; score files .SC1, .SC2, .SC3

Facets=3              ;three facets

Arrange=m,2N,0f       ;arrange tables in measure order, descending, etc

Positive=2            ;the scientists have greater ability with greater score

Non-centered=1        ;scientists and traits are centered, seniors are not

Unexpected = 0          ;report ratings if standardized residual >=|2|

Usort = (),(1,2,3),(3,1,2),(Z,3)  ;sort unexpected ratings various ways

Vertical=2N,3A,2*,1L,2A  ;define rulers

Zscore=1,2            ;report bias size than 1 logit or z>2


?,2,3,RS1,0, ; CREATIVITY

?,1,?,RS1,5, ; CREATIVITY

?,2,?,RS1,2, ; CREATIVITY

3,?B,?,RS2,1, ; CREATIVITY



Rating (or partial credit) scale=RS1,R9,G,O ; CREATIVITY


3=,0,A, ; A if "Flag measures" is checked






Rating (or partial credit) scale=RS2,R9,G,O ; CREATIVITY







1,Senior scientists,A





2,Junior Scientists,A

1,Anne,-2.213118 ; in subset: 2 (shown if the data exhibits subsetting)
















Data= ; If "Include data" is checked



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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
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