Kindergarten and first-grade children conserved physical attributes of inanimate objects more easily than the physical attributes of animate objects. Significant conservation differences between various animate objects also were found. (Author/RL)

Some young children presented with unidimensional and nonverbal conservation tasks were able to give a conservation response if they could answer with a picture instead of orally. (Editor)

A series of tests of dimensional understanding showed that there was a hierarchical sequence, with three year olds able to handle less complex tasks than four year olds. (Editor)

Learning disabled (n=28) and normal achieving (n=28) 8- and 9-year-old boys, approximately equated on the variables of IQ, age, and socioeconomic status, were administered three conservation tasks and J. Flavell's measure of cognitive role-taking. (Author/CL)

Studies the sequence in development of conservation concepts in 19 language-impaired children aged 6-9 years and 20 children of 3-11 years who had no impairment. The two groups showed a similar sequence of development regardless of delay. Conservation of number appeared first, followed by weight, substance, length, area, and volume. (RJC)

Critiques findings and interpretations of an investigation of the role of schooling and urbanization on the acquisition of conservation of physical quantities in Senegalese children. Concludes that the investigation showed a smaller impact of schooling, even in the rural milieu, than a previous study of Senegalese children. (RJC)

Discussed is the physical concept of conservation as it is framed within the laws of conservation of mass, of momentum, and of energy. The derivation of Ohm's Law as a generalization of the relationship between the observed measurements of voltage and current serves as the exemplar of how conservation theories are formed. (JJK)

Mildly retarded preadolescents received equality-rule training, or instruction in which identical or different numbers were applied to identical or different quantities. In tasks of conservation of number, length, weight, and volume, these preadolescents scored higher than did preadolescents who received other types of training. (BC)

Investigated the cognitive development of children with emotional and behavioral difficulties (EBDs). Found that children with EBDs showed a similar order of acquisition of conservation as normal children, and the thinking of children with EBDs was characterized by a high degree of uncertainty. (BC)

A comparison of 28 mildly mentally retarded children with 28 children of average intelligence (mean mental age six years) in learning conservation skills found both groups benefited from Direct Instruction methods, but retarded children acquired only pseudoconservation from Observational Learning methods. Their learning was not tenacious and did…

Discussed are the results of interviews with 63 Australian children (interviewed in English) and 62 Nigerian children (62 interviewed in English and 60 interviewed in Yoruba) to determine how they used number concepts in discussing five demonstrations manipulating physical matter. Differences between the two groups are considered. (RH)

A longitudinal investigation on development of conservation skills in 31 learning disabled (LD) children suggested that delayed transition between preoperational and concrete operational thought may be an important factor in understanding the continued school failure of learning disabled children. (Author/CL)

Hypothesized that there would be no significant sex differences in the performance of conservation tasks on substance or volume, among 247 Ibo-speaking Nigerian children. Attributed confirmation of the hypothesis to social change and greater sexual equality in this developing society. (GC)

Studied 54 kindergarten children to investigate whether a common cognitive capacity underlies both homonym understanding and conservation status. Results indicated conservation status is significantly related to homonym understanding, over and above the rate of the child's general vocabulary level. (Author/CI)