The Quality of Psychological Tests for Educational Research

Abstract

Psychological measurement is an abstract measure. In order to create effective psychological tests, the tests must be created to have a validity and a reliability. The creation of a reliable psychological test is carried out by writing the operational definition first. By having general definitions and operational definitions, then the behavioral indicators can be determined and then to write in questions. The reliability should be checked by experts if each question correspond to the operational definitions or not. The test is a statistical value to IOC value. If the IOC is higher than 0.5, then that question is consistent with the operational definitions due to the fact that the experts give similar opinion. In finding out the reliability, the test has been tried out with a sample of approximately 30 people and calculated the statistics according to the formula. If the reliability value is close to 1, the reliability will be high. But, if the reliability value is close to 0, the reliability will be low. The appropriate value should have reliability higher than 0.7.