Validity & Reliability

Validity and Reliability and their importance to education.

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Validity & Reliability by Mind Map: Validity & Reliability

1. Alternate or Equilivent Forms

1.1. When two tests of similar forms are given to the same group of students under similar circumstances and their scores are fairly close to the same. I remember seeing this method used many times when I was in high school. Our teacher would have one test labeled "TEST A" and another labeled "TEST B" that basically just had the same questions only mixed up to reduce the temptation to cheat. She/he made sure that every other one of us had a different test.

2. Test-retest

2.1. Tells us the level to which the same students can take the same test on different days without learning any new infomation between times and still have similar scores. Informs us as teachers that the test accuately measures achievement.

3. Content Validity Evidence

3.1. Helps to insure our test questions match what we are testing for.

4. Concurrent Criterion Validity Evidence

4.1. Allows us to compare test scores with previous tests to see improvment or decline in performance.

5. Predictive Criterion Validity Evidence

5.1. Allows us to use test scores to predict something about a student. Perhaps this student is further advanced and should be placed in a gifted program.

6. Internal Consistency

6.1. When test questions are arranged in order of difficulty, we can expect all questions of the same difficulty level to be answered right or wrong. This tells us to what extent the student has actually learned.