The Rasch model
A) was developed by a Danish mathematician named Rasch.
B) is an IRT model with specific assumptions about the underlying distribution.
C) was devised from generalizability theory.
D) Both was developed by a Danish mathematician named Rasch and is an IRT model with specific assumptions about the underlying distribution.

Question

Quizplus · Accepted Answer

The Rasch model was indeed developed by a Danish mathematician named Georg Rasch. It is also an item response theory (IRT) model that makes specific assumptions about the underlying distribution of item difficulties and person abilities. Therefore, both statements A and B are true, making D the correct answer. Generalizability theory, on the other hand, does not pertain to the Rasch model.

The Rasch Model