Examines the interrelationships of task performances and developmental changes of 4-, 6-, and 8-year-olds. Significant developmental changes were observed on transposition, cue interference, and spatial memory. The pattern of intercorrelations between tasks suggested a high degree of correspondence across tasks. (ST)

The association of locus of cerebral hemispheric specialization of spatial function with identity and equivalence conservation judgments was tested in a group of four- to six-year-old right-handed children (N=31). (Author/MP)

Contrary to Piaget's predictions, adolescent retardates and 9-year-old normals were more susceptible to the Oppel-Kundt Illusion than high school sophomores and adults. No group differences were found on the Poggendorf Illusion. (MH)

The effects of two types of play experiences (constructive and dramatic) on 64 preschool children's perspective-taking performance were studied. (Author/MP)

Studied discriminative and investigatory response behavior and effects of response training on children 4-5 to 6-5 years of age. (DR)

Results supported Piaget's viewpoint that mental imagery and general symbolic functioning are dependent on the growth of intelligence with respect to the preadolescent period. (Author)

The growth of spatial awareness and representation was studied in children between ages five and nine. A group of thirteen tasks was administered to subjects three times with periods of approximately six months among sessions. The tasks were selected to measure understanding of projective spatial properties (straight line trajectories,…

This research investigated temporal ordering acuity in children, or the ability to perceive the first of an ordered pair of lights, or of a combined light and tone, when the interstimulus time interval within each pair became increasingly short in duration. Two group-related comparisons were made: (1) differences between slow-maturing and average…

Twenty-seven kindergarten children were trained on two different double classification matrix tasks in an attempt to determine whether the tasks were hierarchically related. Prior behavior analyses of the tasks suggested that the two tasks shared many components, but that the more complex task had in addition components not included in the simpler…

This paper examines the concept of decalage from two cognitive-change positions (structures of logical thought and attentional and verbal mediators) and proposes an alternative explanation for decalage from a perceptual-change point of view. The term decalage is used to summarize the relation between differences in performance of various age…