Subdimension/subtest person measurement |
This is for 32-bit Facets 3.87. Here is Help for 64-bit Facets 4
Facets supports two methods for building a profile of person measures across subdimensions or subtests in one analysis.
1. Person-by-subdimension/subtest interactions. (Easy to implement.)
a.each item is identified with its subdimension
b.a standard person facet is specified
c.the subdimensions are specified as a facet
d.the data contain element numbers for item, person, subdimension
e.a standard analysis is performed
f.a person-by-subdimension bias/interaction analysis is performed.
g.the person profile across subdimensions is:
person measure + person-by-subdimension interaction measure
2. Person subdimension measures. (Complex to implement)
a.each item is identified with its subdimension
b.a standard person facet is specified
c.a facet is specified with an element for every person-by-subdimension pairing.
d.the person-by-subdimension elements are group-anchored at zero for each person
e.the data contain element numbers for item, person, person-by-subdimension
f.a standard analysis is performed.
g.the person profile across subdimensions is:
person measure + person-by-subdimension measure
Method 2 approximates the approach in S. Brandt (2010) "Estimating Tests Including Subtests", Journal of Applied Measurement, 11, 4, 352-367.
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