%include file (included specification and data files)

Additional Facets specifications can be placed in separate text files, and then included with your specification file. This is done with the specification:

% include filename

which can be anywhere in the Facets specification and data files, and can also be nested.

 

Example:

Standard format: Knox Cube Test

 

Using %include files:

 

Title = Knox Cube Test (Best Test Design p.31) ; the report heading line

Facets = 2 ; two facets: children and items

Positive = 1 ; for facet 1, children, higher score = higher measure

Noncenter = 1 ; only facet 1, children, does not have mean measure set to zero

Pt-biserial = Yes ; report the point-biserial correlation

Vertical = 1*,1A,2N,2A ; show children by distribution and gender (sex), taps by number and name

Yard = 112,4 ; Vertical rulers 112 columns wide, with 4 lines per logit

Model = ?,?,D ; elements of the two facets interact to produce dichotomous responses

; log(Pni1/Pni0) = Bn - Di

; Bn = ability of child n, Di = Difficulty of item i,

; Pni1 = probability that child n on item i is scored 1.

 

Labels =

%labels.txt

* ; end of item labels

 

Data = ; no data file name, so data follows immediately in this file

1 ,1   ,1 ; child 1 on item 1 scored 1  (blanks are ignored)

1 ,2-18,1,1,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0 ; child 1 on item 2 scored 1, on item 3 scored 1, etc to item 18

| ; 594 more observations, 18 per data line

35,1-18,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 ; child 35 scored 1 on items 1-3, 0 on items 4-18

 

and in file: labels.txt

 

1,Children ; Children are facet 1

1-17 = Boy,,1 ; Pretend boys, in group 1, are numbered 1 through 17.

18-35 = Girl,,2 ; Pretend girls, in group 2, are numbered 18 through 35.

* ; end of child labels for facet 1

2,Tapping items ; Items are facet 2

1 = 1-4 ; Items labelled by the order in which the four blocks are tapped

2 = 2-3

3 = 1-2-4

4 = 1-3-4

5 = 2-1-4

6 = 3-4-1

7 = 1-4-3-2

8 = 1-4-2-3

9 = 1-3-2-4

10= 2-4-3-1

11= 1-3-1-2-4

12= 1-3-2-4-3

13= 1-4-3-2-4

14= 1-4-2-3-4-1

15= 1-3-2-4-1-3

16= 1-4-2-3-1-4

17= 1-4-3-1-2-4

18= 4-1-3-4-2-1-4


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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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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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