Children's spatial mapping starts out particularly sensitive to 3D wall-like boundaries and develops over early childhood to flexibly include other boundary types. This study investigated whether spatial boundaries influence children's episodic memory, as in adults, and whether this effect is modulated by boundary type. Eighty-one Korean children…

Cognitive abilities are essential to children's overall growth; thus, the implementation of early and effective training interventions is a major challenge for developmental psychologists and teachers. This study explores whether an intervention simultaneously operating on fluid reasoning (FR), visuospatial, narrative, and motor abilities could…

Infants' ability to mentally track the orientation of an object during a hidden rotation was investigated (N = 28 in each experiment). A toy on a turntable was fully covered and then rotated 90°. When revealed, the toy had turned with the turntable (probable event), remained at its starting orientation (improbable event in Experiment 1), or…

In 2 experiments a total of 28 6-and 8-year olds and 9 adults were tested on a task that required making left-right directional judgments from various rotated orientations. The results supported the hypothesis that respondents who answered correctly performed imaginary rotations to correctly align themselves with the object. (MDM)

The locative categories--"in,""above,""below," and "beside"--were investigated to determine whether their exemplars were organized according to the prototype distinction. (RH)

A sample of 44 infants of five months of age showed a significant reaching preference for the apparently nearer region of a computer-generated display. This indicated that the infants were sensitive to boundary flow information for depth at an edge. (RH)

Studies were designed to test the prediction that spatial search strategies in infants may be influenced by locomotor experience. The pattern of findings suggests that infants with efficient modes of locomotion are more likely than others to profit from the experiences generated by locomotion. (RJC)

Three experiments using the familiarization-novelty preference procedure confirmed the hypothesis that three-month-old infants could form categorical representations of spatial relations above and below. The infants, after being shown a familiarization diagram with a dot appearing in multiple locations below a line, showed a preference for a novel…

Five experiments tested hypothesis that the A-not-B error results from general processes that make goal-directed actions to remembered locations. Findings showed that 2-year-olds' performance on the A trial was accurate. When the object was hidden at Location B, searches after 10-second delay were biased in the direction of Location A. This bias…

In 3 studies, 2.5- and 3-year-olds transferred knowledge from an easy task that required appreciation of a symbolic relation to a more difficult task involving a symbolic relation that children their age typically do not appreciate. Results support the theory that young children use insight into one symbolic relation to understand other symbolic…

Studies the relationship between timing of puberty and spatial ability in 53 undergraduate women. Results do not show evidence for greater spatial ability on the part of those who have late maturation. (RJC)

Examines the ability of 140 children of 3-5 years to use functional standards to judge size. The ability to use nonegocentric functional standards was present by age 3. However, 3-year-olds performed above chance only when their attention was directed to the relevant function. (RJC)

Two studies examined four- and five-month-old infants' behaviors of leaning forward toward, and reaching for, an object placed within or beyond their reach. Infants who did not lean forward showed a decline in reaching behavior when the object was placed beyond their reach. (MDM)

Children, ages 9 to 13 years, made judgments of proportion with a variety of graphical elements in 2 experiments. A characteristic pattern of over- and underestimation was observed; this pattern was also present, but previously unnoticed, in judgments made by adults. (MDM)