The Knox Cube Test is examined for bias between gender (sex) and item type
Facets specifications and data (in file Kctinter.txt):
; kctinter.txt
TITLE='Knox Cube Test with interactions'
Facets = 4 ; four facets: children, items, child gender, item length
Positive = 1 ; for facet 1, children, higher score = higher measure
Noncenter = 1 ; only facet 1, children, does not have mean measure set to zero
Model =
?,?,? ,? ,D ; elements of the four facets interact to produce dichotomous responses
?,?,?B,?B,D ; interactions between facets 3 and 4, gender and item length
*
Labels =
1, Children ; Children are facet 1
1-17 = 1 Boy,,1 ; Boys, in group 1, are numbered 1 through 17. Gender indicated by first character in label
18-35 = 2 Girl,,2 ; Girls, in group 2, are numbered 18 through 35.
* ; end of child labels for facet 1
2,Tapping items ; Items are facet 2
1 = 2 1-4 ; Items labelled by the order in which the four blocks are tapped
2 = 2 2-3 ; first character in label is the number of taps in the tapping pattern
3 = 3 1-2-4
4 = 3 1-3-4
5 = 3 2-1-4
6 = 3 3-4-1
7 = 4 1-4-3-2
8 = 4 1-4-2-3
9 = 4 1-3-2-4
10 = 4 2-4-3-1
11 = 5 1-3-1-2-4
12 = 5 1-3-2-4-3
13 = 5 1-4-3-2-4
14 = 6 1-4-2-3-4-1
15 = 6 1-3-2-4-1-3
16 = 6 1-4-2-3-1-4
17 = 6 1-4-3-1-2-4
18 = 7-1-3-4-2-1-4
*
3 = Gender, A ; Dummy facet for child gender, only for interactions
1 = Boy, 0 ; elements anchored at 0 so do not enter into the measure estimation
2 = Girl, 0
*
4 = Number of Taps, A ; Dummy facet for number of taps in an item tapping pattern
2 = 2 taps, 0
3 = 3 taps, 0
4 = 4 taps, 0
5 = 5 taps, 0
6 = 6 taps, 0
7 = 7 taps, 0
*
Dvalues = ; The child gender and number of taps are in the labels, so can be omitted from the data
3, 1, 1, 1 ; Child gender element for Facet 3 is indicated in the label of Facet 1, column 1 length 1
4, 2, 1, 1 ; Item length element for Facet 4 is indicated in the label of Facet 2, column 1 length 1
*
; in the data:
; facet 1 element number
; facet 2 element number (a range)
; facet 3 not in data, obtained from Dvalues=
; facet 4 not in data, obtained from Dvalues=
; observations (as many as match range)
Data = ; no data file name, so data follows immediately in this file
1 ,1 ,1 ; child 1 on item 1 scored 1: Facet elements for facets 3 and 4 provided in Dvalues=
1 ,2-18,1,1,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0
2 ,1-18,1,1,1,1,1,1,0,0,1,1,1,0,0,1,0,0,0,0
3 ,1-18,1,1,1,1,1,1,1,1,1,0,1,0,0,0,0,0,0,0
4 ,1-18,1,1,1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0
5 ,1-18,1,1,1,1,1,1,1,1,1,1,0,0,1,1,0,0,0,0
6 ,1-18,1,1,1,1,1,1,1,1,1,1,1,1,0,0,0,0,0,0
7 ,1-18,1,1,1,1,0,0,1,0,1,0,0,0,0,0,0,0,0,0
8 ,1-18,1,1,1,1,1,0,1,0,1,1,0,0,0,0,0,0,0,0
9 ,1-18,1,1,1,1,1,1,1,1,1,1,0,0,1,0,0,0,0,0
10,1-18,1,1,1,1,1,1,1,1,1,1,1,0,0,0,0,0,0,0
11,1-18,1,1,1,1,1,1,1,1,1,1,0,0,1,0,0,0,0,0
12,1-18,1,1,1,0,1,1,0,0,0,0,0,0,0,0,0,0,0,0
13,1-18,1,1,1,1,1,1,1,1,1,0,1,0,0,0,0,0,0,0
14,1-18,1,1,1,1,1,1,1,1,1,1,0,1,0,1,0,0,0,0
15,1-18,1,1,1,1,1,1,1,1,1,1,1,1,1,0,0,0,0,0
16,1-18,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
17,1-18,1,1,1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0
18,1-18,1,1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,0
19,1-18,1,1,1,1,1,1,1,1,1,1,1,0,0,0,0,0,0,0
20,1-18,1,1,1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0
21,1-18,1,1,1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0
22,1-18,1,1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,0
23,1-18,1,1,1,1,0,0,1,0,0,1,0,0,0,0,0,0,0,0
24,1-18,1,1,1,1,1,0,0,1,1,1,1,1,0,0,0,0,0,0
25,1-18,1,1,1,0,1,1,1,1,1,0,0,0,0,0,0,0,0,0
26,1-18,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0
27,1-18,1,1,1,1,1,1,1,1,1,1,1,0,1,0,0,1,1,0
28,1-18,1,1,1,1,0,1,1,1,1,1,0,0,0,0,0,0,0,0
29,1-18,1,1,1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0
30,1-18,1,1,1,1,1,1,1,1,1,1,1,1,1,0,1,0,0,0
31,1-18,1,1,1,1,1,1,1,1,1,1,1,0,1,0,0,0,0,0
32,1-18,1,1,1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0
33,1-18,1,1,1,1,1,1,1,1,1,0,0,1,0,0,0,0,0,0
34,1-18,1,1,1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0
35,1-18,1,1,1,1,1,1,1,1,1,1,1,0,0,0,0,0,0,0
This produces interaction Tables enabling us to investigate the relative performance of the genders on different tapping lengths.
