The Liking for Science Questionnaire measures children's attitudes to science-related activities (RSA p.18). It is an attitude survey with Likert scale ratings of 0=Dislike, 1=Don't know, 2=Like.
Facets specifications and data (in file Lfs.txt):
Title = Liking For Science (Rating Scale Analysis p.18) ; the report heading line
Arrange = F,m ; tables output in Fit-ascending (F) and Measure-descending (m) order
Facets = 2 ; two facets: children and science items
Pt-biserial = y ;compute point-biserial
Positive = 1 ; children are measured with higher score=greater measure
Noncenter = 1 ; mean child measure floats, but mean item measure (facet 2) is set to zero
Usort = U ; sort residuals by unexpectedness
Vertical = 2A,1* ; Vertical rulers for facet 2 by name, then facet 1 by distribution
Yardstick = 0,5 ; Vertical rulers: 0 = horizontally, as many columns per facet as required,
; 5 = vertically, 5 lines per logit
Model = ?,?,faces ; children interact with items to produce ratings on scale "faces"
; log(Pnik/Pnik-1) = Bn - Di - Fk
; Bn = ability of child n, Di = Difficulty of item i, Fk = Challenge of step k,
; Pnik = probability that child n on item i is scored k.
Rating (or partial credit) scale = faces,R2 ; definition of "faces" is "R2", a rating scale with categories 0 thru 2
0 = dislike ; category 0 of "faces" is labelled "dislike"
1 = don't know ; category 1 is "don't know"
2 = like ; category 2 is "like"
* ; end of scale definition for "faces"
Labels =
2,Activity ; facet 2 specified first, for convenience
1 = Watch birds ; first item
2 = Read about animals
| ; the other 21 items go here
24= Flowers live on ?
25= Talk about plants
* ; end of items
1,Child
1-75 = ; 75 children for whom there is no more information
* ; end of child labels
data =
1, 1-25, 1,2,1,1,1,0,2,0,1,2,2,2,2,0,2,1,1,2,2,0,2,1,0,2,0 ; person 1 rated item 1 with 1, but item 2 with 2 etc.
|
75, 1-25, 1,2,0,0,1,1,0,1,1,2,1,2,2,2,2,1,0,2,2,0,2,0,0,1,0
Or:
Dvalues = 2, 1-25 ; place 1-25 in data facet 2 position in every line
1, 1,2,1,1,1,0,2,0,1,2,2,2,2,0,2,1,1,2,2,0,2,1,0,2,0 ; person 1 rated item 1 with 1, but item 2 with 2 etc.
|
75, 1,2,0,0,1,1,0,1,1,2,1,2,2,2,2,1,0,2,2,0,2,0,0,1,0
