11.4 An Example: Background

11.4.1 Research Question

We would like to do a mini simulation study here to compare EAP, MLE, and MAP estimation with estimated item parameters.

11.4.2 Factors

We manipulated two factors:

• sample size

• test length

We fixed the following factors:

• Number of attributes = 5

• Generating model = DINA

• Fitted model = DINA

11.4.3 Conditions

We consider two levels for sample size factor: small (N=100) and moderate (N=500)

We consider two levels for test length: short test (J=15) and long test (J=60)

11.4.4 Design

Fully-crossed: Four-condition combination