A shortened version of a learning-set training procedure was given to 80 children four and five years of age. These children and 16 untrained controls were then tested for quantity conservation. Results relate task performance on the conservation tasks to the type of training received. (Author/JMB)

The relationship between concrete operational thought and concept attainment was investigated in second grade students. (GO)

In this and a previous study, only 29 percent of the subjects of mean age 13.6 had attained the conception of conservation of volume, a finding at variance with Piaget's earlier results. (Authors/CB)

These results stand in sharp contrast to those previously reported which concluded that most college students will abandon conservation; the present finding is of strong (though less than perfect) resistance. (Authors/CB)

Given a chance to eat the candy or drink the juice in this study, the 5-year-olds, 7-year-olds and young adults failed to conserve and made choices based on what they said was appearance of greater quantity rather than upon the already established equivalencies. (Authors/CB)

This study is an attempt to validate an alternative electronic analog task for the Combination of Chemical Bodies Piagetian task. Both tasks were compared with each other, as well as with a Chemistry Placement Exam and an independent Piagetian measure. Subjects were 55 university first-year chemistry students. (MS)

Examines the possible effects of cultural and epistemological factors, such as mythicomagical and empiricoscientific thought, on conservation task performance. (BD)

It was concluded that movie presentation did not destroy the essence of the conservation task and that it gave promise of the development of an effective means of standardizing Piagetian testing when used in conjunction with a series of follow-up questions. (Authors)