Cardinal-ordinal abilities and attentional preferences of kindergarten nonconservers, kindergarten conservers, and third grade conservers of number were compared by employing standarized versions of Piagetian cardinal-ordinal tasks and a triad preference task. (Author/JMB)

Examined seriation, conservation, and theory of mind abilities in 16 adolescents and adults with autism, in 16 adolescents and adults with mental retardation, and in 16 normally developing children. Found that participants with autism performed better than participants with mental retardation on seriation, while no differences emerged between…

Reports on an exploratory study of the ideas that students in the fourth semester of engineering have about conservation. Reviews the Piagetian position on the importance of conservations in logical operational structures in child development. Discusses the development of conservations in science during the 17th, 18th, and 19th centuries and…

Results of two experiments with five-year-olds indicated that: (1) conservation can be quickly taught with lasting results; (2) training on a limited range of exemplars will produce generalized correct responses to other, untrained classes of conservation problems; and (3) children's explanations of their judgments change as a result of exposure…

Presents an experiment that demonstrates conservation of momentum and energy using a box on the ground moving backwards as it is struck by a projectile. Discusses lab calculations, setup, management, errors, and improvements. (JRH)

Play dough is the perfect medium for creating, observing, and thinking about change. Whether the use of play dough is seen as play or a demonstration of physics, through its use children learn about transformations of consistency, color, and identity; and teachers observe how young children learn. (LB)

Event-related potentials (ERPs) of five- to seven-year-old girls were measured while the girls performed a visual selective attention task and a Piagetian conservation task. Results suggested more anterior ERP sources for nonconservers than conservers during early stimulus analysis, and more lateralized ERP sources for conservers than…

A central component in the young child's construction of a number system is an understanding of correspondence. Although current research demonstrates that preschool children use correspondence in a variety of tasks, the nature of the relationship between the use of correspondence action patterns and the use of correspondence as a quantifier is…

Second grade children were pretested for the ability to conserve, after which conservers were paired with nonconservers. Pairs were then instructed to resolve their opposing answers on the conservation tasks. (JMB)

This investigation studied the differential effects of the significance of stimuli on educable mentally retarded (EMR) children in a conservation of number experiment. The sample consisted of 30 low and 30 middle SES children attending classes for the EMR. (Editor)

Five-year-old children who failed pretests of conservation of Number, Length, Mass, and Liquid Amount, but who possessed counting ability and knowledge of the terms "same" and "different" underwent Training and Conservation Posttests. (Author/CS)

An investigation was made of the extent to which mental operations involved in quantitative conservation and pretense play affect the development of gender constancy. The research design included three phases: a pretest establishing subjects' levels of conservation and gender understanding, a training phase, and conservation and gender constancy…

Topics briefly discussed include awareness or consciousness, recollection, reconstitution, and conceptualization; the nature of causal exploration and contradiction; and conservation. Examples are provided in relation to children's perception. For related articles, see TM 501 289 and 290. (RC)

Presents two studies which investigated the importance of subtle contexture factors on the young child's performance on cognitive problems--specifically, conservation. (ST)