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Frederick, Karen; Barnard-Brak, Lucy; Sulak, Tracey – International Journal of Research & Method in Education, 2012
There has been a significant increase in the use of secondary data sets. Many such data sets purport to be nationally representative. Secondary data sets include research commissioned by the National Center for Education Statistics, the Centers for Disease Control, and other public entities. Research increasingly utilizes these secondary data in…
Descriptors: Autism, Statistical Analysis, Pervasive Developmental Disorders, Disproportionate Representation
Dahl, Gordon; Lochner, Lance – Institute for Research on Poverty, 2009
Past estimates of the effect of family income on child development have often been plagued by endogeneity and measurement error. In this paper, we use two simulated instrumental variables strategies to estimate the causal effect of income on children's math and reading achievement. Our identification derives from the large, non-linear changes…
Descriptors: Family Income, Academic Achievement, Evidence, Tax Credits
Sociometrics Corp., Los Altos, CA. – 1997
This Research Archive on Disability in the United States (RADIUS), a database on CD-ROM, contains 19 data sets on the prevalence, incidence, correlates, and consequences of disability in the United States. The 19 data sets are: (1) 1991 National Maternal and Infant Health Follow-Up Survey; (2) National Pediatric Trauma Registry, 1988-1994; (3)…
Descriptors: Adults, Children, Data Collection, Data Interpretation