2.4 Educational assessments: reasoning from evidence

What all educational assessments have in common is the desire to reason from particular things students say, do, or make, to inferences about what they know or can do more broadly

An assessment is a tool designed to observe students’ behavior and produce data that can be used to draw reasonable inferences about what students know

The process of collecting evidence to support the type of inferences one wants to draw is referred to as reasoning from evidence

2.4.1 IRT as psychometric models

2.4.2 CDM as psychometric models

2.4.3 IRT vs CDM