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Download full textMoses, Tim; Liu, Jinghua – Educational Testing Service, 2011
In equating research and practice, equating functions that are smooth are typically assumed to be more accurate than equating functions with irregularities. This assumption presumes that population test score distributions are relatively smooth. In this study, two examples were used to reconsider common beliefs about smoothing and equating. The…
Descriptors: Equated Scores, Data Analysis, Scores, Methods
Nguyen, Bach Mai Dolly; Nguyen, Mike Hoa; Teranishi, Robert T.; Hune, Shirley – Educational Testing Service, 2015
Utilizing disaggregated data from the Office of the Superintendent of Public Instruction (OSPI) and the Educational Research Data Center (ERDC), this report offers a deeper and more nuanced perspective on the educational realities of Asian Americans and Pacific Islander (AAPI) students and reinforces the need for disaggregated data to unmask the…
Descriptors: Asian American Students, Pacific Islanders, Student Needs, Educational Opportunities
Puhan, Gautam – Educational Testing Service, 2011
The study evaluated the effectiveness of log-linear presmoothing (Holland & Thayer, 1987) on the accuracy of small sample chained equipercentile equatings under two conditions (i.e., using small samples that differed randomly in ability from the target population "versus" using small samples that were distinctly different from the…
Descriptors: Equated Scores, Data Analysis, Accuracy, Sample Size
Teranishi, Robert; Lok, Libby; Nguyen, Bach Mai Dolly – Educational Testing Service, 2013
In 2013, the National Commission on Asian American and Pacific Islander Research in Education (CARE) and the White House Initiative on Asian Americans and Pacific Islanders (WHIAAPI)--with support from ETS and Asian Americans and Pacific Islanders in Philanthropy (AAPIP)--began an Asian American and Pacific Islander (AAPI) data quality campaign.…
Descriptors: College Students, Asian American Students, Pacific Islanders, Consciousness Raising
Rose, Norman; von Davier, Matthias; Xu, Xueli – Educational Testing Service, 2010
Large-scale educational surveys are low-stakes assessments of educational outcomes conducted using nationally representative samples. In these surveys, students do not receive individual scores, and the outcome of the assessment is inconsequential for respondents. The low-stakes nature of these surveys, as well as variations in average performance…
Descriptors: Item Response Theory, Educational Assessment, Data Analysis, Case Studies
von Davier, Matthias; Xu, Xueli; Carstensen, Claus H. – Educational Testing Service, 2009
A general diagnostic model was used to specify and compare two multidimensional item-response-theory (MIRT) models for longitudinal data: (a) a model that handles repeated measurements as multiple, correlated variables over time (Andersen, 1985) and (b) a model that assumes one common variable over time and additional orthogonal variables that…
Descriptors: Models, Item Response Theory, Longitudinal Studies, Measurement
