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Download full textRauh, Hellgard – 1973
In this study an attempt was made to obtain a developmental dimension for estimating longitudinal development on the basis of cross-sectional data. To check the validity of this approach, the cross-sectional data were compared with true longitudinal data. Forty-three public school children were given a series of conservation tasks in four…
Descriptors: Child Development, Cognitive Development, Conservation (Concept), Cross Sectional Studies
