Support for the operation of internal factors in cognitive development was provided by an obtained increase from first to second posttest scores. Two conservations were considered to be involved--conservation of the whole and of the part. (Author)

In the first experiment, observations were made of children ages four-and-a-half to five-and-a-half years of age who were induced to use counting or matching in a Piagetian number conservation task. The spontaneous matching and counting behavior of a more mature but not yet conserving sample was investigated in the second experiment. (RH)

Reports on a study designed (1) to modify one of the few existing standardized tests of conservation so that it can be used to assess the conservation of identity as well as the conservation of equivalence and (2) to use both versions of the test to gather additional evidence on the question of developmental priority among young children. (MP)

Reports three experiments which examined kindergarteners' ability to conserve number in response to three forms of questioning: nonverbal, standard, and control. There was no indication that a full mastery of conservation could be elicited earlier by the nonverbal procedure. (Author/JMB)

The possible effect of experimenter expectancy in number conservation task experiments was explored. (JMB)

This study examined the effects of judgment-contingent feedback and prior knowledge of 3 rules on the conservation learning of 188 kindergarten children. (Author/JMB)

Preschool and kindergarten nonconservers (N=114) were examined for their use of dimensions relevant to quantity in two conservation-of-substance tasks. The results were interpreted as being counter to Piaget's 4-step equilibration model of the development of compensation and conservation. (ST)

Questions concerning the effects of familiar and alien materials, age and culture, and the etiology of conservation are examined in number and continous quantity tasks assessing conservation in Yoruba children from traditional and educationally advantaged homes. (Author/AJ)

This study investigated the influence of knowledge of conservation on recall of an event by 4- to 7-year-old children. Changes in recall over time were found to follow an inconsistent pattern and seemed to be unrelated to changes in the subject's stage of development. (Author/JMB)

Children 3.5 to 5.5 years of age who were unable to conserve length with Piaget's classical task did conserve length with parallel nonverbal tasks. Findings suggest that "preoperational" children apparently do not fail to conserve length because of centration, misleading perceptual information, or immature cognitive operations regarding…

Conservation in congenitally blind, blindfolded and sighted elementary school students indicated the order of acquisition of various types of conservation was constant. (ST)

Children (N=45), who had failed to attain criterion on three tests of linear order, were trained under one of three conditions: reciprocity, reversibility, and discrimination. Under all three conditions children demonstrated learning during training and significant specific transfer effects; reversibility training led to generalized transfer to…

Sixty-one children in grades 1, 2, and 3 in rural county schools were compared in their semantic differential judgments of relational terms used in assessing conservation. (WY)