1. Content valdity evidence: The simplest way to determine whether or not tests have sufficient validity. Content validity is most used for making sure test items are what the teacher decides should be on the test. It gives information on if the test looks valid, " however it does not tell whether the reading level is too high or if items are poorly constructed" (Kubiszyn & Borich, 2010 pg. 330). refrence:Kubiszyn, T. & Borich, G. (2010). Educational testing & measurement: Classroom application and practice (9th ed.). John Wiley & Sons, Inc., Hoboken, NJ.
2. Criterion related validity evidence: " establish by correlating test scores with an external criterion" (Kubiszyn & Borich, 2010 pg. 330). refrence:Kubiszyn, T. & Borich, G. (2010). Educational testing & measurement: Classroom application and practice (9th ed.). John Wiley & Sons, Inc., Hoboken, NJ.
2.1. Concurrent criterion related validity evidence: " deals with measures that can me administered at the sametime as the measure to be validated" (Kubiszyn & Borich, 2010 pg. 330). Refrence:Kubiszyn, T. & Borich, G. (2010). Educational testing & measurement: Classroom application and practice (9th ed.). John Wiley & Sons, Inc., Hoboken, NJ.
2.2. Concurrent validity evidence: distributes two tests (new test and established test) to determine the correlation between the set of test scores.
3. Predictive validity evidence: determines how well a test predicts some future behavior of test takers.
4. Construct validity evidence: This is determined by finding whether test results correspond with scores on other varaibles as predicted by some rationale or theroy.
5. Test -retest: The administration of the same test twice to the same people and then scores are correlated. This will determine if the test is relaible.
5.1. New node
6. Alternate Form or equivalence: This is the opposite of test-retest, alternate form administors two diffrent tests to the same people and coorelates thier score. Using alternative form reduces the factor of memorization and practice they may occur if taking the same test twice.
6.1. New node
7. Internal Consistency has two components. Split halves: determines the correlation between two halves of the test which may result in odd-even reliability. Odd- even reliability is when test levels (meaning easy and difficult) are not equally spread on the test, so the test should be divided into odd and even numbers.
