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Download full textCreighton, Theodore B.; Coleman, Donald G.; Adams, R. C. – 1997
A continuing and vexing problem associated with survey instrument development is the creation of items, initially, that correlate favorably a posteriori with constructs being measured. This study tests the use of symbolic-logic matrices developed by D. G. Coleman (1979) in creating factorially "pure" statistically discrete constructs in…
Descriptors: Construct Validity, Factor Structure, Mathematical Logic, Matrices
Medina-Diaz, Maria – 1992
The cognitive structure of an algebra test was defined and validated using the linear test model (LLTM) and quadratic assignment (QA) techniques. The LLTM is an extension of the Rasch model with a linear constraint that describes item difficulty in terms of the cognitive operations required to solve the item. The model permits the specification of…
Descriptors: Achievement Tests, Algebra, Cognitive Processes, Cognitive Structures
