Ninety six kindergarten age children participated in a study which assessed the effects of three procedural factors on performance in identity and equivalence conservation tasks. (SB)

A replication study was conducted to determine whether conservation-of-number performance would be improved by questioning the subject only after the transformation is performed, rather than before and after the transformation, as is done in the standard conservation test. Subjects were preschoolers, aged 0-4 to 5-7. (Author/MP)

This study examined the effectiveness of the Early Childhood Curriculum (ECC) as a viable instrument for the immediate acceleration of cognitive development among preschoolers. During an eight month tutorial project, ten 3-year-old children received one 15 minute lesson each week from the curriculum. (Author/SB)

Forty-eight kindergarten children were divided into four groups on the basis of their status (preoperational vs. transitional) and whether or not they received inversion-negation training. Results indicated no differences due to status, but differences due to training. Results do not confirm the contention that acceleration can only occur during…

The construct of conservation, as presently studied in dichotomous form (i.e., Conservers vs. Nonconservers), may be a convenient fiction, but that is all it is. There seems to be great need to treat this dimension as the continuous variable it really is. (Authors)

Tasks administered to sixty females 60-120 months of age show that it is possible to test for Piagetian logic by using problems structured in a social context and also suggest that the order of acquisition of logical operations with social stimuli is consistent with the order which has been established with the use of physical stimuli. (Author/CS)

Forty-four middle and 44 lower SES children were given Piaget's provoked and spontaneous correspondence tests to see: (1) how they made correspondence, (2) if the idea of equivalent sets, once achieved, was retained after objects were regrouped destroying visible equivalence, and (3) if age, sex, and SES differences existed. Results indicated that…

Five Inhelder-Piaget formal operations tasks were analyzed to determine the extent that the formal operational skills they assess were ordered into a stable hierarchy generalizable across samples of subjects. Subjects were 34 collegiate gymnasts (19 males, 15 females), and 22 students (1 male, 21 females) from a university nursing program.…