Seven-year-olds compared successively presented oblique lines which varied as to their position within a square display and their relation to the diagonal axis of the display. Children apparently encoded lines in terms of position and axis features. They used a categorical spatial representational system to compare oblique lines. (Author/RD)

A sample of 838 children ages 5 through 15 years in Australia, England, North America, and Sweden were interviewed about physical and sexual development. The study covers essentially the same area as Bernstein and Cowan (1975) but extends the sample on the dimensions of age, number, randomness, and comparisons made. (Author/RH)

Two experiments tested the effects of crawling-onset age, amount of crawling experience, and testing age on avoidance of the deep side of a visual cliff apparatus by human infants. Crawling-onset age disciminated between infants because crawling during the tactile phase interferes with later visual control of locomotion. (Author/RD)

The discrimination of minimally paired speech sounds by seven severely retarded children (mean age 3.2 years, and mean IQ 38.4) was compared with the discrimination performance of eight normally developing 7-month-old infants. (Author/PHR)

Factor analysis of correlations among the measures of recall clustering, free sorting, and recognition errors revealed significant convergent validity for consistent use of a semantic perceptual organization strategy in the three tasks. Ten-year-old, adult, and elderly adult subjects relied on a semantic strategy; four- and six-year-olds encoded…

The study compared the cognitive, affective, and perceptual role taking skills of 38 learning disabled (LD) children (ages 5 to 8) with those of a control group of normal children. Ss were administered three role taking tasks which measured their skills in each of the domains. The results demonstrated a role taking deficit in the LD children.…

A reading program for second- and third-grade nonreaders based on neurological development rather than reading or perceptual skills is described. Results of a study of 24 children in the program showed average gains of eight months in reading ability in four months of instruction. (PHR)

Sex and, to a partial degree, age had significant effects on sex role differentiation in preschool children, but income level had little effect. (Author/RL)

The paper deals with the effects of general experiences and specific educational practices on the structure and functioning of the central nervous system. (CL)

Studies the effects of perceptual salience on performance in problems requiring the coordination of information. Subjects were groups of children, younger adults, and older adults. For each of the age groups, those problems containing the most salient information were solved faster and more accurately than problems containing the least salient…

Fourteen two-year-olds were presented with minimal word pairs in a new and efficient experimental perception paradigm. Data provide a view of relative difficulty of various minimal phonological contrasts for children. (CHK)

Explored the effectiveness of an intervention program designed by the researcher to enhance playfulness, using sensorial stimulation. Found that the effectiveness of the playfulness training interventions is an important theoretical result that provides support for a model of teaching and learning that includes the enhancement of playfulness.…

Two studies assessed the gaze following of 12-, 14-, and 18-month-olds. Findings indicated that infants at all ages looked at the adult's target more when the adult turned to the target with open eyes than when the adult turned with closed eyes. Additional evidence suggested that infants were not simply responding to adult head turning, but were…

Four experiments tested the hypothesis that the importance of linguistic labels for young children's conceptual organization stems from a privileged processing status of auditory input over visual input. Findings indicated that when auditory and visual stimuli were presented separately, 4-year-olds were likely to process both kinds of stimuli,…