This module examines the role of standard error of measurement in standardized language and psycho-educational tests. Standard error of measurement is present in a variety of measures in every day life. The confidence interval, which must accompany any and all standardized scores reported while evaluating a child for a disability, is an indicator of the error inherent in tests . Cate demonstrates how the confidence interval makes the information gained from administration of standardized tests of little use.
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New York City Department of Education, (2001). Standard Operating Procedures Manual for the Committees on Preschool Special Education. Retrieved from http://schoolsstg.nycenet.edu/NR/rdonlyres/E8BD811F-1607-465A-850E-F82C04B5A6A8/59495/CPSESOPM2001FINAL4.pdf