This study identified new methodological variables which might affect the responses of second and third grade children to Piagetian conservation tasks. (GO)

Many conservation studies have been performed using time consuming individual testing. The sequential studies reported in this paper describe the development of a group film test of conservation. (Author)

Study results indicate that sex of experimenter appears to be an important factor in conservation assessment at the lower elementary level. (DP)

The purposes of this study were to determine the feasibility of group testing of conservation and examine the differential performance of students drawn from various populations. The effects of three factors were examined: grade level (2, 4, 6), SES (disadvantaged, advantaged, and race (Black, White, Latin). (Author)

The objective of the study was to develop a test of concept formation which would: (1) not be biased by reading difficulty; (2) be sufficiently stimulating to capture the attention of the students; (3) incorporate both aspects of concept formation of discriminative response and conservation; (4) have a spread of item difficulty appropriate for…

The purpose of this study was to investigate the effects of perceptual focus and planar orientation of rods on conservation responses when parallel translations are utilized. The translations along the major axes of symmetry utilized two modes: (1) translation of one of two rods, and (2) simultaneous translation of two of three rods in opposite…