NotesFAQContact Us
Collection
Advanced
Search Tips
Source
Education Level
Audience
Location
Laws, Policies, & Programs
Assessments and Surveys
What Works Clearinghouse Rating
Showing one result Save | Export
Muthen, Bengt – 1986
The use of new extension of standard Item Response Theory (IRT) modeling of dichotomous items to include external variables is proposed. External variables may appear both as categorical grouping variables and as continuous variables; this requires the formulation of a model for the relationships between the external variables and the response…
Descriptors: Achievement Tests, Algebra, Computer Simulation, Grade 8