Investigated developmental differences in implicit memory performance. Subjects ranged in age from second grade to college level. Results suggested that there are two different components in implicit memory, one that shows no developmental difference and relies heavily on perceptual processing and one that shows an age-related or…

Studied structures and relationships in one-step additive and multiplicative problems solved by 450 students in grades 2, 3, and 4. Results show that the facility ratio of the problems differs by structure, situation, and the sequence of data. The ability to solve one-step problems increases with age, but relative problem difficulty is grade…

Compared reality monitoring of interactive events among children and adults. Found that 4-year-olds had more difficulty discriminating imagined actions than 12-year-olds and adults. Imagined actions were more often confused with performed ones than the reverse for 4- and 8-year-olds. Reality monitoring decreased over time. Object use during…

Examined changes from age 7 to 82 years in processes responsible for preparation and interference control underlying alternation between two tasks. Found a U-shaped function for switch costs, with larger costs for young children and older adults. Age-related variance in task-switching performance was partially independent from age-related variance…

Healthy adolescents (79 girls, 66 boys), ages 9-17, completed the Iowa Gambling Task (IGT; A. Bechara, A. R. Damasio, H. Damasio, & S. W. Anderson, 1994) as well as working memory (digit span) and behavioral inhibition (go/no-go) tasks. Cross-sectional age-related changes were seen on all 3 tasks. Gender differences were seen in IGT deck…

The current study examined the contributions of general slowing and frontal decline to age differences in fluid intelligence. Participants aged 20-89 years completed Block Design, Matrix Reasoning, simple reaction time, choice reaction time, Wisconsin Card Sorting, and Tower of London tasks. Age-related declines in fluid intelligence, speed of…

Background: This study examined the effects of age and two novel factors (intensity and emotion category) on healthy children's developing emotion-processing from 4 to 15 years using two matching paradigms. Methods: An explicit emotion-matching task was employed in which children matched the emotion of a target individual, and an implicit task…

Ninety-six participants, who were younger (20 years) or older (68 years) adults and either monolingual or bilingual, completed tasks assessing working memory, lexical retrieval, and executive control. Younger participants performed most of the tasks better than older participants, confirming the effect of aging on these processes. The effect of…

This study examined relationships between cognitive functioning in older people and (1) levels of mental, physical and social activities, and (2) intentions regarding maintenance of cognitive functioning. Participants (N = 145) were 70-91 years of age, varied in health status and socio-economic backgrounds. Current cognitive functioning was…

Research on the cognitive processes used in semantic priming has shown that the processing of a given stimulus is speeded by prior processing of a related stimulus as the result of automatic and/or effortful priming. To investigate the effect of age on semantic priming, two independent studies were conducted at Pomona College in California and at…

A decrement toward lowered levels of cognitive functioning was noted in a study of aged residents of a dependent care facility when tested on a series of cognitive conservation tasks. (Author/KM)

Development of toddlers' combinatorial skills was examined in the domains of object manipulation, symbolic play, motor imitation, language, and peer interaction. Additionally, task demands that might produce variations in age-related patterns within or between domains were examined. Data were collected in free play sessions and during structured…

Two divergent views of linguistic ability in adulthood currently exist. One view maintains that verbal ability is preserved in old age, while the other view maintains that verbal ability declines, especially comprehension. To analyze the effects of semantic priming during sentence processing by 30 younger adults (mean age, 25 years) and 30 older…

Two experiments examined children's ability to apply three different standards for evaluating their understanding. Five-, seven-, nine-, and eleven-year-old children were presented with short narrative passages within which were embedded three types of problems (nonsense words, internal inconsistencies, and prior knowledge violations), each of…