Summed-score linking using item response theory: Application to depression measurement

Autor:	M, Orlando, C D, Sherbourne, D, Thissen
Rok vydání:	2000
Předmět:	Psychiatry and Mental health Clinical Psychology Depression Reaction Time Humans Psychological Theory
Zdroj:	Psychological Assessment. 12:354-359
ISSN:	1939-134X 1040-3590
DOI:	10.1037/1040-3590.12.3.354
Popis:	An item response theory (IRT) approach to test linking based on summed scores is presented and demonstrated by calibrating a modified 23-item version of the Center for Epidemiologic Studies Depression Scale (CES-D) to the standard 20-item CES-D. Data are from the Depression Patient Outcomes Research Team, II, which used a modified CES-D to measure risk for depression. Responses (N = 1,120) to items on both the original and modified versions were calibrated simultaneously using F. Samejima's (1969, 1997) graded IRT model. The 2 scales were linked on the basis of derived summed-score-to-IRT-score translation tables. The established cut score of 16 on the standard CES-D corresponded most closely to a summed score of 20 on the modified version. The IRT summed-score approach to test linking is a straightforward, valid, and practical method that can be applied in a variety of situations.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b585286140529be1e737e07df50b87e8 https://doi.org/10.1037/1040-3590.12.3.354 Zobrazit plný text záznamu