Children's mental representations about physical concepts and phenomena play a vital role in the learning process. This is confirmed by the data derived from relevant researches which demonstrate that the students formulate incompatible ideas compared with the scientific ones. In this research we investigate the representations of 14-15 years old…

Investigated in two experiments involving 15- and 16-year-old mentally retarded students was knowledge of conceptual categories as reflected by semantic priming effects. (Author/IM)

This paper discusses the use of mediated learning which involves training given to other humans by an experienced adult who frames, selects, focuses and feeds back environmental experiences in such a manner as to create learning situations. The authors' program utilizing such an approach is described. (Author/EJT)

Groups of formally educated and of uneducated rural Kpelle tribesman and children were given conceptual learning problems. The finding that education proved to have no significant effect on rule learning for either a conjunctive or a disjunctive rule is interpreted as indicating that formal education exerts its influence primarily on the way in…

A theoretical perspective is presented for examining conceptual change in adolescence and the social context of learning. A case study of the Computer as Lab Partner project illustrates the following: (1) conceptual and cognitive changes in eighth graders' understanding of physical science concepts; (2) ways concepts are constructed; and (3)…