Onset of psychosis may be associated with abnormal adolescent neurodevelopment. Here we examined the neurocognitive profile of first-episode, adolescent onset psychosis (AOP) as compared to typically developing adolescents, and asked whether neurocognitive performance varied differentially as a function of age in the cases compared with controls.…

By age 2, children attribute referential mental states such as perceptions and emotions to themselves and others, yet it is not until age 4 that they attribute representational mental states such as beliefs. This raises an interesting question: is attribution of beliefs different from attribution of perceptions and emotions in terms of its neural…

Eighty four-year-old and 80 seven-year-old subjects were given a standard paired-associate learning (PAL) task and a battery of ability tasks (Labeling, Recognition, Labeling Time, Digit Span, Visual Memory, Spatial Relations, Vocabulary, and the Follow the Instructions test) to investigate the development of individual differences in visual…

A total of 12 second- and fifth-graders' semantic decision times for pictures and words were analyzed relative to the predictions derived from unitary- and dual-memory models. (MS)

According to the cognitive-congruency principle, humor appreciation peaks when the cognitive demands of the stimulus are congruent with the cognitive level of the child. This study tested the principle with jokes based on concepts associated with concrete operational thinking, conservation of mass and weight. This method provides a satisfactory…

Twelve one-word-stage children were given minimally contrasting two-word instructions. Since non-linguistic cues were eliminated, comprehension involved making non-syntactic inferences from the word combinations. The children could respond correctly to some of the instructions, and even carried out some unfamiliar activities. (Author/SW)

Examined relationships among working memory, memory span, and reading skills in children and adults. Found that working memory and short-term memory skills develop through adolescence, but working memory skills show declines in adulthood. Age-related declines in memory appear to be related to the task's processing demands, which may affect the…

This paper describes an experiment which investigated the development of recall skills in 120 Caucasian, middle class children in the second, fourth, and sixth grades. Within each age group, four experimental groups were formed in which subjects were asked to remember and recall 16 nouns by: (1) forming mental representations of each word…

Two experiments, involving 90 first-grade children, were conducted to test a retrieval-inefficiency explanation for the failure of visual imagery to facilitate young children's prose recall. (Author/MP)

Four problems in children's paired-associate memory were addressed: (1) reappraisal of the presumed developmental trend in presentation mode effect during grade-school years, (2) identification of the locus of this developmental effect, (3) evaluation of the influence of combined presentation (verbal plus pictorial) relative to pictorial…

This study explored the developmental changes in children's effective utilization of verbal versus pictorial stimuli in forming connections between stimulus and response elements in a paired-associate task. A total of 112 children (56 males and 56 females), half of them 4-year-olds and half 8-year-olds, were tested under eight conditions involving…

In an effort to cross-validate a Japanese study, a 16 item test of logical connectives was administered to 223 boys and girls at each grade level (third through ninth grades) and two groups of college sophomore girls. The purpose of the test was to assess their understanding of class inclusion and exclusion, class intersection, and class union.…

In order to provide an estimate of encoding within the active mode and a comparison between three modes of representation (enactive, imagery, and verbal), 36 second grade children from the high socioeconomic community of Beverly Hills, California, were presented with object pairs under one of three conditions (haptic-object versus visual-object…

Two experiments, designed to examine the developmental changes in the modification of visual memory by verbal information, are described in this paper. In both experiments, first, third, and fifth grade children and college students were shown slides of short episodes followed by oral questions. Questions either described or did not describe…

This study investigates the role of labeling in developmental increases in picture recall. In two experiments, the memory for pictorial paired-associates of first graders or second graders, fourth graders and adults was evaluated by means of a study-test cued recall procedure. In Experiment 1, the stimulus presentation duration (on-time) and the…