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ERIC Number: ED243935
Record Type: RIE
Publication Date: 1984-Apr
Pages: 24
Abstractor: N/A
Reference Count: 0
ISBN: N/A
ISSN: N/A
The Attenuation Paradox of Traditional Test Theory as a Breakdown of Local Independence in Person-Item Response Theory.
Andrich, David
Both the attenuation paradox of traditional test theory and the assumption of local independence in person-item response theory have caused problems in interpretation. This paper demonstrates that the two are related concepts, and, through this demonstration, both are clarified. It is demonstrated that the breakdown of local independence leads to data which manifest the attenuation paradox. A series of simulation studies show the relationship between the degree of violation of local independence and the effects on the traditional KR-20 index of internal consistency. (Author)
Publication Type: Speeches/Meeting Papers; Reports - Research
Education Level: N/A
Audience: Researchers
Language: English
Sponsor: N/A
Authoring Institution: N/A
Identifiers: Attentuation Paradox; Local Independence (Tests); Unidimensionality (Tests)
Note: Paper presented at the Annual Meeting of the National Council on Measurement in Education (New Orleans, LA, April 24-26, 1984).