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Peer reviewedMarkham, Ellen M. – Child Development, 1978
Study 1 asked second through sixth graders, who could answer inclusion questions, to answer such questions without empirical information about relative quantity and to predict whether subordinate classes could be made larger than their superordinate classes. In study 2, children's performance in two part-whole domains, classes and collections, was…
Descriptors: Classification, Cluster Grouping, Comparative Analysis, Elementary School Students
Direct linkYip, Tiffany; Seaton, Eleanor K.; Sellers, Robert M. – Child Development, 2006
Cluster analytic methods were used to create 4 theorized ethnic identity statuses (achieved, foreclosed, moratorium, and diffused) among 940 African American adolescents (13-17 years old), college students (18-23 years old), and adults (27-78 years old). Evidence for the existence of 4 identity statuses was found across the 3 age groups. The…
Descriptors: African Americans, Racial Identification, Depression (Psychology), Adolescents
