What is the relationship between reliability and validity? The reliability of the scorer also influences reliability of the test.Clear and concise instructions increase reliability.The difficulty level and clarity of expression of a test item also affect the reliability of test scores.Hence the test is to be lengthened 4.75 times.What are the factors that affect reliability of a test?įactors Influencing the Reliability of Test Scores If a person takes the test again, will he or she get a similar test score, or a much different score? A test that yields similar scores for a person who repeats the test is said to measure a characteristic reliably. Reliability refers to how dependably or consistently a test measures a characteristic. If using human raters, train them well.Ensure participants are familiar with the assessment user interface.Have a consistent environment for participants.Use enough questions to assess competence.Here are six practical tips to help increase the reliability of your assessment:
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