Using Item Response Theory to Learn about Observational Instruments
Publication information:
McGinn, D., Kelcey, B., Hill, H., & Chin, M. (n.d.). Using Item Response Theory to Learn about Observational Instruments.
Abstract
As many states are slated to soon use scores derived from classroom observation instruments in high-stakes decisions, developers must cultivate methods for improving the functioning of these instruments. We show how multidimensional, multilevel item response theory models can yield information critical for improving the performance of observational instruments.