1. Two Types of Validity
1.1. Criterion Related Validity Evidence
1.1.1. Two Types
1.1.1.1. Concurrent
1.1.1.1.1. Administer new and established test group
1.1.1.1.2. establish validity of new test
1.1.1.1.3. measures both tests at the same time
1.1.1.2. Predictive
1.1.1.2.1. used for altitude test
1.1.1.2.2. test predicts future of examinee
1.1.2. Correlated Scores with External Criterion
1.2. Content Validity Evidence
1.2.1. mininum requirement for useful test
1.2.2. looks valid
1.2.3. better to test achievement
1.2.4. no guarantee
1.2.5. inspect questions to see if correspond with what should be covered
1.3. Construct Validity Evidence
1.3.1. relationship to other information corresponds well with some theory
1.3.2. no accepted second measure
1.3.3. no future behavior avaliable
2. Three types of Reliabilty
2.1. Internal Consistency/ odd-even reliablity
2.1.1. Items randomly spread for difficulty
2.1.2. split halves determine correlation between the test split in half
2.1.3. Kuder-Richardson
2.1.3.1. the extent to ehich the entire test represents a simple fairly consistent measure of a concept
2.2. Alternative form/ Equivalence
2.2.1. Requires two equivalent forms of a test
2.2.2. Administered to students and correlation determined
2.2.3. can be used to obatin an estimate of reliablity of scores
2.2.4. eliminates memory and practice of test-restest
2.3. Test-Retest/ Stability
2.3.1. Test given twice and correlation is between to the two scores is determined
2.3.2. Memory or experience is involved