tailieunhanh - Chapter 10:Criteria and Test Types

Validity the extent to which it measures what it is supposed to measure & nothing else (content) Face validity Content validity Construct validity Empirical validity If a test item looks right to other testers, teachers, moderators & testees described as having face validity In the past, regarded by test writers simply as a public relations exercise Now, designers of communicative tests: face validity- the most important of all types of validity | Chapter 10: Criteria and Test Types A. Criteria Validity Reliability Discrimination Administration Test instructions to candidates Backwash effects 1. Validity Validity the extent to which it measures what it is supposed to measure & nothing else (content) Face validity Content validity Construct validity Empirical validity Face validity If a test item looks right to other testers, teachers, moderators & testees described as having face validity In the past, regarded by test writers simply as a public relations exercise Now, designers of communicative tests: face validity- the most important of all types of validity Content validity Depending on a careful analysis of the language being tested & of the particular course objective When constructing tests, writers should first draw up a table of test specifications (language skills, areas included ) Construct validity A test having construct validity is capable of measuring specific characteristics in accordance with a theory of . | Chapter 10: Criteria and Test Types A. Criteria Validity Reliability Discrimination Administration Test instructions to candidates Backwash effects 1. Validity Validity the extent to which it measures what it is supposed to measure & nothing else (content) Face validity Content validity Construct validity Empirical validity Face validity If a test item looks right to other testers, teachers, moderators & testees described as having face validity In the past, regarded by test writers simply as a public relations exercise Now, designers of communicative tests: face validity- the most important of all types of validity Content validity Depending on a careful analysis of the language being tested & of the particular course objective When constructing tests, writers should first draw up a table of test specifications (language skills, areas included ) Construct validity A test having construct validity is capable of measuring specific characteristics in accordance with a theory of language behavior and learning For example, a test consisting of multiple choice items will lack construct validity if the communicative approach is adopted during the language course Empirical /statistical validity This kind of validity obtained as a result of comparing the results of the test with the results of some criterion measure such as: An existing test, known to be valid and given at the same time The teacher’s ratings or any other such form of independent assessment given at the same time Empirical /statistical validity The subsequent (later) performance of the testees on a certain task measured by some valid test The teacher’s ratings or any other such form of independent assessment given later Summary (Validity) The test situation The technique used important factor in determining the overall validity of any test 2. Reliability (definitions) A test administrated to the same candidates on different occasions produces the same results reliable Reliability denotes the extent