Programed instruction accelerated the ability of 62 children, ages four to six, in acquiring the concept of number conservation. (CP)

Attainment relative to six cognitive operations and four number and computational skills was assessed for 90 elementary students using clinical procedures. Variance associated with conservation of number, seriation, and logical classification competency accounted for a significant proportion of the variance in achievement scores. (Author/MK)

This study found that 23 hearing-impaired and 25 normally hearing children (ages 7-14) did not differ on nonverbal intelligence, but the hearing-impaired children obtained lower scores than normally hearing peers on a social decentration task and a nonsocial decentration task. Social decentration was positively correlated with nonsocial…

Examined were children's conception of changes in the state of matter and their understanding of the reversibility of the process. The relationship between children's intuitive ideas about matter, as observed in this study, and their logical ability to conserve weight is discussed. (CW)

The study with 23 severely hearing impaired adolescents found that subjects using cued speech performed highest on Piagetian conservation problems, the oral-aural group performed better on linguistically-sensitive metaphor problems. Differences were not, however, statistically significant. (Author/DB)

Assessing Markman's hypothesis that the organizational principles underlying collection concepts facilitate children's performance on cognitive tasks requiring part-whole comparisons, three experiments indicated that the facilitative effect of collection labels appears to be specific to the class-inclusion task. Results suggest that Markman's…

Investigated was the learning of the mathematical uses of "more,""fewer," and "less" at a very early stage in the development of ideas. (CW)

Dutch researchers investigated the effects of Obuchova's method of teaching measurement to kindergarten children with no knowledge of conservation or seriation. Results indicated training was highly effective. Skills were transferred to conservation tasks not taught in training. Transfer to concepts not included in training was also observed. (SM)

The effects of advance organizer instruction on the acquisition of number, mass, area, quantity, and length conservation concepts in 3- and 4-year-old children are examined. Participating in the experiment were 28 children, a total of 14 in respective experimental and control groups. All children were pretested and determined to be nonconservers.…

This study of 145 middle class first grade students investigated whether a relationship exists between early acquisition of Piagetian conservation tasks and gifted performance on a mental abilities test. Students were evaluated individually on tasks involving the conservation of number, of liquid quantity, and of mass. A moderate correlation was…

A study of children's ability to conserve gender identity was made to: (1) investigate whether constancy would be achieved according to the developmental sequence proposed by Kohlberg (1965) and found in subsequent studies; (2) see if the pattern of conservation of referent-type followed the same sequence found in previous studies; (3) assess age…

Piaget's conservation experiments have been criticized and reinterpreted in the light of various theoretical orientations. Some research studies suggest social as well as cognitive factors to explain children's answers. Other research indicates the importance of interaction variables in the conservation task. Actually, interaction in the…

Verbal and pictorial class-inclusion questions were presented to children in kindergarten through grade 6. The data indicates that the purely verbal form of the question was less difficult for the children to answer than the pictorial form. (Author/CS)

The general purposes of this study were to analyze responses on five Piagetian formal operational tasks in a test-retest situation to determine the extent to which taking a pretest effected scores on posttests and to determine task and examiner reliabilities. Significant test score gains on Piagetian tasks appeared to result from test-retest…