In this test for age-related effects of perceptual interference under different task conditions, 240 subjects, 60 each in kindergarten and grades 1 through 3, learned the positions of 5 cards upon each of which 3 stimulus attributes--a word, a color, and a shape--were presented in different descending orders. Two stimulus conditions were employed,…

This study questioned whether children's relative inability to use the two cerebral hemispheres independently contributes to their difficulty with the simultaneous execution of conflicting tasks. Two naming tasks involving the identification of upright and inverted letters were employed; conditions differed according to how the letter pairs were…

Deductive reasoning problems were presented to 72 public elementary school students, half of whom were identified as gifted (mean age of 9.6 years) and half of whom were regular education students (mean age of 9.3 years). They were used to test an hypothesis that gifted children who score significantly higher than average on standardized…

Several writers have suggested that changes in temporal perspective during adolescence are largely a consequence of the cognitive acquisitions held to characterize the period (i.e., emergence of formal operations reasoning). To replicate earlier research, which found little association between adolescents' formal operations reasoning and future…

The ability of 3-, 4-, and 5-year-old children to infer the position of an object in a room from information contained on a map was assessed under five conditions: (1) map aligned inside the room (the pretest); (2) map aligned outside the room; (3) map rotated 180 degrees inside the room; (4) map rotated 180 degrees outside the room; (5) map held…

The purpose of this paper is to provide information on child psychology and child development which could be useful to persons planning interpretive programs for children in public parks and recreation areas. Aspects of physical, cognitive and social developmental processes in children of different ages are described briefly and specific examples…

This study analyzed children's comprehension of teacher directives at three levels of clarity. A total of 64 subjects, ages 5 1/2, 7 1/2, 9 1/2 and 11 1/2, participated. Photographic slides of teacher-pupil directive interactions paired with tape recorded teacher directives were presented to subjects under one of four levels of verbal context:…

Because of the general recognition of the importance of mathematics ability, and the close relationship between mathematics ability and spatial ability, eight studies were undertaken to discover and describe aspects of spatial competence in children. The range of abilities tapped stretched from very early precursor skills with Euclidean space to…

This study examines the longitudinal relationships between mastery motivation and differentiated measures of intellectual development assessed at 1 and 3 1/2 years of age in a sample of 35 children (21 boys and 14 girls). At one year three types of mastery motivation were assessed using structured tasks: (1) producing effects (engaging in…

In a 1964 investigation of the effects of age and memory on problem solving, using subjects from age three to age nineteen, it was found that the youngest and oldest subjects performed a three-choice probabilistic task significantly different from the "middle-age" children (7 to 9 years old). The three-choice task was an apparatus with a…

A reanalysis of B. Inhelder's (1968) data concerning cognitive development among retardates was performed by selecting from the original 159 subjects a sample of 104 educable mentally retarded Ss (7-19 years old) who were diagnosed as fixated or nonfixated at three of the cognitive stages postulated by Jean Piaget. The results indicated that among…

This study recorded the pretend play behavior of a total of 22 boys and girls aged 20 and 26 months to determine the effects of age, sex, toy type, and order of toy presentation on the amount of pretending observed during two home visits. Each visit consisted of three segments: two play episodes of 10 minutes each and an intervening segment of…

Evaluated were the cognitive and social development of 40 orthopedially handicapped children ages 6 to 12 years. Social development was measured by the Children's Social Relations Rating Scale, the Children's Social Relations Interview Schedule, and the Children's Role Taking Task. The Concrete Operations Tasks assessed cognitive ability. Data…

A total of 34 children, ages 2 and a half to 6, were presented with sentences for imitation that either violated or honored a prenominal adjective ordering rule, which requires that size adjectives must precede color adjectives. Two response measures were evaluated in terms of these sentence types: latency to begin a sentence imitation and recall…

A proposed study of the differences in the way children perceive, approach, and behave in problem-solving situations is described. The behavioral measure to be used is "glancing," which has been related to outerdirectedness. Children will be given two sets of two puzzles to put together. On the basis of the number of glances and the situation in…