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Seibert, Jeffrey M.; And Others – Intelligence, 1984
Do stage-related patterns of early cognitive development reported for normally developing children also characterize at-risk and handicapped children when mental age organization of data is used? Mental age predicted Piagetian-based cognitive levels one to three but did not predict highest-level symbolic functioning in 95 handicapped children.…
Descriptors: Cognitive Development, Correlation, Developmental Disabilities, Developmental Stages

Seibert, Jeffrey M.; And Others – Merrill-Palmer Quarterly, 1986
Tests hypotheses that social and object skills can be equated for cognitive complexity and that correlations between measures organized according to levels are high for all samples spanning the developmental range. Cognitive levels of both object and social skills were assessed for 50 normal and 34 handicapped children. Hypotheses were confirmed.…
Descriptors: Chronological Age, Cognitive Development, Day Care, Disabilities