Purpose of study was: (1) to obtain data in a cultural setting concerning the ability of children to conserve weight at the point of transition from primary to secondary education; and (2) to explore the relationship between performance or reasoning tasks of the kind employed in nonverbal psychometric tests and the presence or absence of ability…

It was found, as expected, that the number of subjects giving conservation responses did not reach 50 percent until age 12. Schooling did not seem to be a major factor in accelerating the attainment of concrete operations. Social class and urbanization had an effect on several tasks. (Author/AM)

The Concept Assessment Kit Conservation test was administered to 250 children from 6 countries. Results indicated that the age trends in conservation development for both males and females are fairly consistent from culture to culture. (DM)

A recently developed test of basic Piagetian abilities, the Colored Blocks Test, is described, and new data collected in rural Hawaii and in a working class Chicago suburb are used to defend its validity as a tool for cross-cultural measurement of cognitive development. (Author/AM)

The aim was to determine whether logical concepts acquired in one language could be transferred to another language. (Author)

Two hundred and twenty-five Lebanese elementary school children were interviewed. The ability to conserve number" and liquid" increased with age. Lebanese children lagged behind American middle-class children. (DM)

This study examined the Piagetian developmental stages and order of the conservation concepts (area and distance) and the concept of horizontality in the coordinate reference systems. Subjects were 240 children, 60 randomly selected from each of grades one, three, five, seven, in three primary schools located in rural, suburban, and open terrain…

The conservation task is analyzed into three essential components, a theoretical framework for interpreting cross-cultural studies is presented, and its applicability to existing empirical results is demonstrated. (JM)

Examines the effects of cultural and educational variables on the development of number conservation among Baoule (agricultural group) children and Dioula (merchant group) children. Results suggest that both school and a merchant culture provide for acquisition of a mature number concept, supporting the "functional learning systems"…