Twenty first-graders observed an adult model perform a quantity conservation task. The children were then tested on a series of generalization tasks immediately, after one week, and after three months. The results suggested that the social experience of observation appeared to activate a cognitive restructuring of the children's mental operations.…

Twenty nonconserving retarded adults were assigned to equated training and control groups (n=10 in each group). (Author)

Examines the possible effects of cultural and epistemological factors, such as mythicomagical and empiricoscientific thought, on conservation task performance. (BD)

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)

Explores the hypothesis that there is a decline in operational thought ability in the elderly. Two samples of elderly males, with mean ages of 71.80 and 74.29 years respectively, were tested for their ability to conserve mass, surface areas and volume. (BD)

Preoperational and concrete operational kindergarten children received stimulus differentiation training, either with or without feedback, and then a series of discrimination learning problems in which a blank trial probe was used to detect a child's hypothesis after each feedback trial. Piagetian stage theory requires elaboration to account…

Investigated the effects of verbal-mediated modeling on transfer to a criterion-referenced paper/pencil task in 51 low-IQ students. Results indicated no significant correlation between concrete operational reasoning and reading comprehension, mathematical reasoning, or language expression. (JAC)

The author offers the premise that the field of learning disabilities is at a critical point in development and that the research literature manifests such trends as few references beyond special education, emphasis on conversation tasks rather than unifying themes (equilibration and structuralism) of J. Piaget, and reductionist tendencies. (CL)

The present studies were designed to test the role of descrepancy between existing cognitive structures and current input and the amount of pleasure derived from successful processing of that input with respect to children's appreciation of humor. (Author/SB)

Forty students from the first, second, fourth, and sixth grades (10 from each), equally balanced for sex and representing a middle class SES, were individually administered mathematical tasks of matching, equality, cardination, and measure and Piagetian conservation task of number, length, and surface or area. (NQ)