Reports a new technique for assessing conservation of liquid quantity using sealed bottles. When used with a sample of 40 six- and seven-year-olds, results correlated strongly with those of the traditional Piagetian task involving pouring. (SJL)

Two experiments investigated which of two factors is responsible for decalage between Piaget's equivalence and identity conservation tasks. Performance of 78 primary school students between 57 and 79 months of age was compared on equivalence and identity tasks and a third task, equivalence I, which retains transitivity requirement of Piaget's task…

This study is a replication of Piaget and Inhelder's intertask study of conservation and conservation-related tasks involving subjects ranging in age from nursery to second grade and using varying types of vessels. (SB)

Attempted to determine to what extent the conservation concepts of young children change in the period between kindergarten and first grade. (DD)

Concludes that despite a significant relationship between conservation and intelligence, neither is a significant predictor of reading achievement. (RB)

Identifies the concept of reversibility (an awareness of the prior situation after a transformation of shape) as an area of difficulty in the Piagetian concept of transitional conservation. (RB)

A study of the effects of three types of conservation judgments (qualitative, quantitative, and equivalence) on both continuous and discontinuous substances in 24, 4-, 5-, and 6-year-olds. Subjects were tested on conservation ability with and without verbal justification. Half of the subjects were provided a memory aid, the other half were not.…

Many conservation studies have been performed using time consuming individual testing. The sequential studies reported in this paper describe the development of a group film test of conservation. (Author)

An investigation of the role of an atomistic view of material substance in the development of conservation of continuous quantity in young children. Piagetian tasks using blocks, coarse salt and water were presented to a total of 180 kindergarten, first, and second grade children. Results indicate that tasks using blocks were the easiest. (ED)

The study investigated the effects of basic concepts training on conservation acquisition in 41 kindergarten children (17 White boys, 15 White girls, 6 Black girls, and 5 Black boys). Only the conservation training program resulted in significant effects, and that was for the White students alone. (Author)

Second grade children were pretested for the ability to conserve, after which conservers were paired with nonconservers. Pairs were then instructed to resolve their opposing answers on the conservation tasks. (JMB)