RELIABILITY

1. By LakasianusTamnau RELIABILITY Language Testing

2. Test A Language Testing

3. Test B Language Testing

4. Language Testing

5. RELIABILITY Language Testing

6. Language Testing

7. Language Testing

8. Language Testing

9. The Reliability Coefficient • Allow us to compare the reliability of different test • The ideal reliability coefficient is 1 • The requirement: to have 2 sets of scores for comparison by using test-retest method. Language Testing

10. Scorer Reliability • It’s about scores on a multiple choice test • Every candidate would get precisely the same score on both of two possible administration of the test. • Any scorer would give the same score as would be given by any other scorer on either occasion. Language Testing

11. Language Testing

12. How to Make Test more Reliable • Take enough samples of behaviour • Exclude items which do not discriminate well between weaker and stronger students • Do not allow candidates too much freedom • Write unambiguous items • Provide clear and explicit instructions • Ensure that test are well laid out and perfectly legible • Make candidates familiar with format and testing techniques • Provide uniform and non-distracting conditions of administration • Use item that permit scoring which is as objective as posible • Make comparison between candidates as direct as possible • Provide a detailed scoring key • Train scorers • Agree acceptable responses and appropriate scores at outset of scoring • Identify candidates by number not name • Employ multiple, independent scoring Language Testing

13. Language Testing