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ERIC Number: ED334241
Record Type: Non-Journal
Publication Date: 1991-Apr
Pages: 150
Abstractor: N/A
Reference Count: N/A
Psychometric Report for the NELS:88 Base Year Test Battery. Contractor Report. Technical Report.
Rock, Donald A.; Pollack, Judith M.
The National Education Longitudinal Study of 1988 (NELS:88) is designed to monitor the transition of a national sample of young adults as they progress from junior to senior high school and then to postsecondary education or the world of work. An in-depth description is provided of the rationale, development, and psychometric properties of the base year test for grade 8. The achievement test battery was composed of four tests; (1) reading comprehension; (2) mathematics; (3) science; and (4) history/citizenship/geography. The eighth grade (base year) sample was composed of approximately 24,600 eighth graders from 1,052 schools. Results show that the NELS:88 test battery met or exceeded all its psychometric objectives. Reliabilities for the reading comprehension, mathematics, and history/citizenship/geography tests were acceptable; the science test was somewhat less reliable. Internal consistency was high enough to justify item response theory scoring. There was no consistent evidence of item bias for gender or racial/ethnic groups. Factor analyses support the discriminant validity of the four content areas tested. Five tables and seven figures complement the discussion. A 32-item list of references is included. Eight appendices provide item analysis statistics, differential item functioning statistics, item parameters, test information functions, descriptions of individual items, intercorrelations of testlets, definitions of proficiency scores, and standard errors of measurement at theta scale points. (SLD)
Publication Type: Numerical/Quantitative Data; Reports - Evaluative
Education Level: N/A
Audience: N/A
Language: English
Sponsor: National Center for Education Statistics (ED), Washington, DC.
Authoring Institution: Educational Testing Service, Princeton, NJ.
IES Cited: ED565643