Two teachers independently score the same set of essays and produce highly similar results. This provides evidence of:
Agreement between independent scorers is inter-rater reliability.
Agreement between independent scorers is inter-rater reliability.
Comparing performance on two equivalent versions of a test is parallel-forms (equivalent-forms) reliability.
Checking consistency between two halves of one test is split-half reliability.
Consistency alone does not guarantee validity: a test can consistently measure the wrong construct, so it is reliable but may lack validity.
Measuring an unintended construct consistently is reliable but not valid, which separates the two concepts.
Difficulty percentage = (correct responses / total students) × 100 = 18/60 × 100 = 30%.
Content validity concerns whether a test adequately covers the whole content domain; drawing from one chapter undermines it.
Face validity is the surface impression that a test appears to measure what it should.
Criterion validity examines how well test scores correspond with an external outcome measure.
Showing that a test comprehensively represents the intended curriculum is evidence of content validity, which is stronger than mere appearance.
Consistent scores from the same learners across two occasions show test-retest reliability.
If an item meant to measure critical thinking only rewards vocabulary recognition, it does not measure the intended construct, so construct validity is lacking.
A test developed by specialists and given under established procedures is a standardized test.
The basic difference is who develops the test: classroom teachers for teacher-made tests, specialists for standardized tests.
Achievement tests measure what has been learned from a particular instructional program.
Aptitude tests are designed to predict future performance.
Projective techniques use ambiguous stimuli to reveal personality traits not easily expressed directly.
Intelligence tests estimate general cognitive functioning rather than mastery of a taught curriculum.
A word limit and specified points to cover make this a restricted-response essay.
Freedom to select and organize content is the mark of an extended-response essay.
Restricted-response items limit the range and organization of acceptable answers, which makes scoring more consistent.
Extended-response essays give learners the most opportunity to select evidence, synthesize and organize an argument.
In extended-response tests students must generate and organize their own answers, so copying is comparatively difficult.
Criterion-referenced scores are interpreted against predetermined standards, so one student's score does not affect another's interpretation.
Criterion-referenced tests focus on a clearly defined learning domain, unlike norm-referenced tests that sample broadly to rank students.