PYC4807 Psychological Assessment Summary Exam Answers.
A. Define reliability and discuss two forms of reliability where error variance due to time sampling might affect the magnitude of the reliability coefficient • Reliability of a measure refers to the consistency with which it measures what it is supposed to measure • Reliability = consistency of a measure • Where consistency lies there is always a certain amount of error • Two forms where error variance due to time sampling might affect the magnitude of the reliability coefficient • 1. Test-Retest Reliability • Administer it twice to the same set of group test-takers • Coefficient is called the coefficient of stability • Physical environment, testing conditions may contribute to systematic error variance • Transfer effects such as practice and memory play a role on second testing occasion • The magnitude
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pyc4807 psychological assessment summary exam an