High school students in South Australia were administered in group fashion the pendulum and the chemical color change developmental tasks. The major conclusion of this study is the fact that it is possible to translate into group form, administer, and assess rapidly and with considerable reliability Piagetian problem indicators of developmental…

Describes a set of Science Reasoning Tasks which are valid and reliable for assessing the ability of children to use concrete and formal reasoning strategies and can be used by science teachers without professional training in Piagetian studies. Thirty pupils can be tested on each task in about 50 minutes. (Author/DS)

Criticizes the Mitchell and Lawson (1988) report from the viewpoint of individual interview method. Provides Lawson's reply to the comment by showing differences in research philosophy and methods. (YP)

Describes development and validation of a 24-item test which assesses student performance on a set of 12 objectives related to planning and constructing an investigation. In addition to sound psychometric properties, the test is distinctive because it includes a set of interrelated cumulative objectives which reflect autonomous problem solving.…

Describes the development of a Piagetian demonstration group test utilized to assess 9-12 year-old students' (N=161) understanding of heat and temperature. Findings include a unitary relationship between Piagetian stages of development and levels of understanding of heat concepts. (DS)