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Direct linkJelicic, Helena; Phelps, Erin; Lerner, Richard M. – Journal of Youth and Adolescence, 2010
The study of adolescent development rests on methodologically appropriate collection and interpretation of longitudinal data. While all longitudinal studies of adolescent development involve missing data, the methods to treat missingness that have been recommended most often focus on missing data from cross-sectional studies. The problems of…
Descriptors: Adolescent Development, Family Structure, Geographic Regions, Data Collection
Download full textBaxter, G. P.; Ahmed, S.; Sikali, E.; Waits, T.; Sloan, M.; Salvucci, S. – National Center for Education Statistics, 2007
In 2003, a trial National Assessment of Educational Progress (NAEP) mathematics assessment was administered in Spanish to public school students at grades 4 and 8 in Puerto Rico. Based on preliminary analyses of the 2003 data, changes were made in administration and translation procedures for the 2005 NAEP administration in Puerto Rico. This…
Descriptors: Foreign Countries, Grade 4, Grade 5, Grade 6
