Browsing by Author "Bulut, Okan"
Now showing 1 - 16 of 16
- Results Per Page
- Sort Options
Item Between-person and within-person subscore reliability: comparison of unidimensional and multidimensional IRT models(2013-06) Bulut, OkanThe importance of subscores in educational and psychological assessments is undeniable. Subscores yield diagnostic information that can be used for determining how each examinee's abilities/skills vary over different content domains. One of the most common criticisms about reporting and using subscores is insufficient reliability of subscores. This study employs a new reliability approach that allows the evaluation of between-person subscore reliability as well as within-person subscore reliability. Using this approach, the unidimensional IRT (UIRT) and multidimensional IRT (MIRT) models are compared in terms of subscore reliability in simulation and real data studies. Simulation conditions in the simulation study are subtest length, correlations among subscores, and number of subtests. Both unidimensional and multidimensional subscores are estimated with the maximum a posteriori probability (MAP) method. Subscore reliability of ability estimates are evaluated in light of between-person reliability, within-person reliability, and total profile reliability. The results of this study suggest that the MIRT model performs better than the UIRT model under all simulation conditions. Multidimensional subscore estimation benefits from correlations among subscores as ancillary information, and it yields more reliable subscore estimates than unidimensional subscore estimation. The subtest length is positively associated with both between-person and within-person reliability. Higher correlations among subscores improve between-person reliability, while they substantially decrease within-person reliability. The number of subtests seems to influence between-person reliability slightly but it has no effect on within-person reliability. The two estimation methods provide similar results with real data as well.Item Effects of Participation in School Sports on Academic and Social Outcome Variables(2015-04) Bulut, Okan; Van Boekel, Martin; Stanke, Luke; Palma, Jose R.; Nickodem, Kyle; Vue, Kory; Chang, Yu-Feng; Latterell, Nicholas; Rodriguez, Michael C.Item Examining After School Activities: Do Breadth and Intensity Matter?(2014-04) Palma, Jose R.; Van Boekel, Martin; Stanke, Luke; Vue, Kory; Cabrera, Julio C.; Chang, Yu-Feng; Latterell, Nicholas; Karl, Stacy R.; Rodriguez, Michael C.; Bulut, OkanItem Examining Item Parameter Drift as a Source of Construct Shift(2013-04) Bulut, Okan; Stanke, Luke; Rodriguez, Michael C.; Palma, Jose R.; Vue, Kory; Cabrera, Julio C.Item Interaction Among Gender, Race/Ethnicity, and School Sports Participation in Youth Development(2017-04) Kang, Youngsoon; Van Boekel, Martin; Nickodem, Kyle; Palma, Jose R.; Vue, Kory; Jang, Yoojeong; Rodriguez, Michael C.; Bulut, OkanItem Investigating Linear and Nonlinear Item Parameter Drift with Explanatory IRT Models(2016-04) Stanke, Luke; Bulut, Okan; Rodriguez, Michael C.; Palma, JoseItem Investigating Measurement Invariance Assumption Using Item Parameter Drift Across Grade Levels and ELL Groups(2013-04) Stanke, Luke; Palma, Jose; Bulut, Okan; Rodriguez, Michael C.Item Investigating the Effects of School Sports on Academic and Social Outcomes(2014-04) Bulut, Okan; Van Boekel, Martin; Palma, Jose R.; Stanke, Luke; Rodriguez, Michael C.Item LGB Students and School Sports: A Positive Youth Development Approach(2016-04) Nickodem, Kyle; Van Boekel, Martin; Stanke, Luke; Palma, Jose R.; Vue, Kory; Bulut, Okan; Kang, Youngsoon; Chang, Yu-Feng; Rodriguez, Michael C.Item Measurement Invariance in Noncognitive Measures: Validity Approach Using Explanatory Item Response Modeling(2018-04) Palma, Jose; Kang, Youngsoon; Bulut, Okan; Cabrera, JulioItem Nonresponse Issue in Noncognitive Measures: Validity Approach Using Explanatory Item Response Modeling(2019-04) Xiao, Jiaying; Bulut, OkanItem Nonresponse Issue in Noncognitive Measures: Validity Approach Using Explanatory Item Response Modeling(2019-04) Xiao, Jiaying; Bulut, OkanItem Nonresponse Issue in Noncognitive Measures: Validity Approach Using Explanatory Item Response Modeling(2019-04) Xiao, Jiaying; Bulut, Okan; Rodriguez, Michael CItem Response Processes in Noncognitive Measures: Validity Evidence from Explanatory Item Response Modeling(2018-07) Rodriguez, Michael C.; Bulut, Okan; Vue, Kory; Cabrera, JulioItem Using Developmental Skills & Supports to Improve Youth Outcomes(2016-06) Rodriguez, Michael C.; Palma, Jose; Van Boekel, Martin; Bulut, Okan; Nickodem, Kyle; Kang, Youngsoon; Vue, Kory; Jang, Yoo JeongItem Using School Climate to Positively Develop Youth(2013-04) Vue, Kory Y.; Stanke, Luke; Palma, Jose; Cabrera, Julio; Bulut, Okan; Latterell, Nicholas; Rodriguez, Michael C.