Chaitanya Ramineni

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Number sense development was tracked from the beginning of kindergarten through the middle of first grade, over six time points. Children (n = 277) were then assessed on general math achievement at the end of first grade. Number sense performance in kindergarten, as well as number sense growth, accounted for 66 percent of the variance in first-grade math(More)
Children's number competencies over 6 time points, from the beginning of kindergarten to the middle of 1st grade, were examined in relation to their mathematics achievement over 5 later time points, from the end of 1st grade to the end of 3rd grade. The relation between early number competence and mathematics achievement was strong and significant(More)
Children's symbolic number sense was examined at the beginning of first grade with a short screen of competencies related to counting, number knowledge, and arithmetic operations. Conventional mathematics achievement was then assessed at the end of both first and third grades. Controlling for age and cognitive abilities (i.e., language, spatial, and(More)
Children's change over time in frequency of finger use on number combinations was examined in relation to their change in accuracy. Performance was tracked longitudinally over 11 time points, from the beginning of kindergarten (mean age = 5.7 years) to the end of second grade (n= 217). Accuracy in number combinations increased steadily during the time(More)
BACKGROUND Systematic trends in examinee performance across the testing day (sequence effects) could indicate that artifacts of the testing situation have an impact on scores. This research investigated the presence of sequence effects for United States Medical Licensing Exam (USMLE) Step 2 clinical skills (CS) examination components. METHOD Data from(More)
In this chapter, we present selected findings from a collaborative program of research between a non-profit educational research institution and a public science and technology university. After providing a background to the design of automated essay scoring (AES), we explore this method as one of six systems designed to assess writing performance. Because(More)
We explore how data generated by an online formative automated writing evaluation tool can help connect student writing product and processes, and thereby provide evidence for improvement in student writing. Data for 12,337 8th grade students were retrieved from the Criterion database and analyzed using statistical methods. The data primarily consisted of(More)
BACKGROUND As with any examination using human raters, it is possible that human subjectivity may introduce measurement error. An examinee's performance might be scored differently on the basis of the quality of the preceding performance(s) (contrast effects). This research investigated the presence of contrast effects, within and across test sessions, for(More)
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