The extent to which an evaluation is truthful or valid in what it says about a program, project, or material.

Performance as determined by some type of assessment or testing.

Consists of emotions, feelings, and attitudes.

Evaluator action to ensure that the identity of subjects cannot be ascertained during the course of a study, in study reports, or in any other way.

Often used as a synonym for evaluation. The term is sometimes recommended for restriction to processes that are focused on quantitative and/or testing approaches.

A person's opinion about another person, thing, or state.

Loss of subjects from the defined sample during the course of data collection.

Consumers of the evaluation; those who will or should read or hear of the evaluation, either during or at the end of the evaluation process. Includes those persons who will be guided by the evaluation [..]

Alternative to traditional testing that focuses on student skills in carrying out real-world tasks.

Information that describes the project, including its goals, objectives, context, and stakeholders.