Presents exercises that analyze the additive property of energy. Concludes that if a body has more than one component of energy depending on the same physical quantity, the body's total energy will be the algebraic sum of the components if a linear relationship exists between the energy components and that physical quantity. (JRH)

Presents a mechanical model that is able to duplicate the torque-free twist of a real cat. Discusses results of experiments that analyze its free fall from an inverted position. (JRH)

Describes an exploratory investigation of blind children's concepts of number, substance, length, area, weight, and volume conservation. Six children totally without sight or with only light perception were pretested, taught, and posttested twice using tasks specifically adapted for tactual presentation of materials. The children showed increased…

The study compared the conservation abilities of 80 prelingually deaf and 80 hearing students (ages 9-12) in the Republic of China. Results indicated a significant difference in conservation ability between groups favoring the hearing students and no significant difference in conservation ability between age levels for the deaf group. (DB)

Among results comparing attainment of the conservation concept in blind (N=30), partially sighted (N=50), and sighted (N=40) children (ages 6-15) in Taiwan were that development of partially sighted children was more like the development of sighted than blind children, and that a 1-4 year developmental lag occurred in blind children. (Author/DB)

Kindergarten children and third-grade students viewed transformations either apparently violating or actually preserving conservation. Subjects reacted to and explained outcomes and responded to conventional conservation questions. Findings suggest very gradual progression across two stages and indicate that many third-grade students do not view…

A study conducted with kindergarten and elementary school children showed that Piagetian tasks which measured seriation, conservation, and multiple classification were equal or superior to traditional intelligence tests in predicting number language, number line comprehension, and verbal arithmetic. (GC)

Data on the conservation of discontinuous quantity are analyzed according to two different criteria: judgment only and judgment plus explanation. The results are discussed in terms of Piagetian theory and particularly of the assumption that language development is a consequence, and not a cause, of cognitive development. (Author/KC)

All of the children were presented conservation of liquid and weight problems and 12 metaphor items. The results suggest that hearing loss did not affect the solution of either conservation or metaphor. (Author)

Described is a technique for determining whether a student can conserve matter. This technique utilizes a square-triangle problem. Included are typical answers and Piagetian-type explanations for such answers. (DS)

Children follow a Piagetian cognitive-developmental sequence in their ability to understand age concepts, as shown by the association between responses on the Concept of Age instrument and level of reasoning on conservation tasks. Education in aging must consider the reasoning patterns of children of various ages. (Author)

The association of locus of cerebral hemispheric specialization of spatial function with identity and equivalence conservation judgments was tested in a group of four- to six-year-old right-handed children (N=31). (Author/MP)

Thirty-four educable mentally retarded young adults were given a one-bit logic problem (Experiment 1) or a test of conservation (Experiment 2) and classified as either low or high performers. In a second session, the low performers were paired with the high performers, and the dyads were required to agree on the solution to the problems presented.…

Support for the contention that the empirical specification of the Piagetian concept of reversibility during training is not a requirement for conservation induction is presented in this experimental study. (Author/JKS)

A comparative study of conservation development in partially sighted, sighted, and sighted blindfolded children at four age levels was assessed. Conservation on tasks of mass, weight, and volume were evaluated using Piaget and Inhelder's prediction, judgment, and explanation questions. The significant differences were found between groups, task,…