Describes two experiments on conservation of weight and volume based on Piaget's experiments. These experiments showed that some college students were unable to operate at the formal operations level. (PS)

Presents a descriptive analogy comparing Piaget's theory of intellectual development to the development of athletic abilities in order to provide insight into Piagetian theory. (SL)

The paper presents a discussion of a theory of intelligence which postulates that intelligence develops rather than that intelligence is an innate ability possessed in full measure at birth. Discussion of unresolved issues surrounding their theory is presented. The effect of such a theory on science teaching is discussed. (RE)

Critical examination of the Teachers' Guide and Guide to Experiments and Questions Book in O-level Nuffield physics course reveals there may be disadvantages to the current organization when analyzed with psychological considerations. (PS)

Provides evidence to support the conclusion that relationships exist among Piagetian levels of intellectual development, intelligence quotient, content achievement, and inquiry skills in ninth and tenth grade biology students (N=92). (DS)

Investigated the development of formal reasoning among students (ages 10-18 years) from predominately White, middle-class communities located in rural, suburban homogeneous, and suburban heterogeneous areas. Results indicate clear differences among communities in formal reasoning ability. Implications for using science instruction to promote…

Discusses whether formal thought constitutes a structured whole and role of propositional logic in advanced reasoning. Presents aspects of advanced reasoning model, considering hypothesis generation/testing as central processes in intellectual development. Argues that advanced reasoning schemata are linked by these processes and should be…