What is Reliability and Validity

1. Kubizan& Borich.2010

2. Validity test items

2.1. Is the test valid ?

2.2. Does test have intended purpose?

2.2.1. Does the test is doing what it is suppose to do?

3. Reliability "refers to stability of a test score over repeated administration." (Kubiszan & Borich. 2010.p 349

3.1. Test and Retesting

3.1.1. Alternative Form or Equivalence

3.1.2. Internal consistency

4. Validity "What does it suppose to measure ?" (Kubiszan & , 2010. p.329

4.1. Content Validity Evidence

4.2. Criterion-Related Evidence

4.3. Predictive Validity Evidence