# Domain

In education, a category of either intellectual functioning or curricular content. There are three domains of intellectual functioning: AFFECTIVE, COGNITIVE and psychomotor. In the area of curricular classification, domain refers to a well-defined set of tasks that constitute the range of expected abilities for a particular subject. Thus, the domain of third grade mathematics would include the range of mathematical skills that a third grade student should be able to perform at the end of the year. Tests that measure such skills are often referred to as domainreferenced (or criterion-referenced) tests.