Overestimation of Internal Consistency by K-R 20 in Tests Containing Interpretive Exercises.

Hanna, Gerald S.; And Others

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ERIC Number: EJ240148

Record Type: Journal

Publication Date: 1981-Jan

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Overestimation of Internal Consistency by K-R 20 in Tests Containing Interpretive Exercises.

Hanna, Gerald S.; And Others

Measurement and Evaluation in Guidance, v13 n4 p217-21 Jan 1981

Compared Kuder-Richardson Formula 20 and coefficient alpha (by blocks) reliability estimates for a reading comprehension test. On the average, K-R 20 exceeded coefficient alpha by about .05; that is, K-R 20 exaggerated the internal consistency of the test as would be expected from theory. Implications for counseling interpretations are discussed. (Author)

Descriptors: Achievement Tests, Comparative Analysis, Educational Diagnosis, Elementary Secondary Education, School Counseling, Test Interpretation, Test Reliability, Test Validity

Publication Type: Journal Articles; Reports - Research

Education Level: N/A

Audience: N/A

Language: English

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