Children perform worse than adults on tests of cognitive flexibility, which is a component of executive function. To assess what aspects of a cognitive flexibility task (cued switching) children have difficulty with, investigators tested where eye gaze diverged over age. Eye-tracking was used as a proxy for attention during the preparatory period…

Results of three experiments support the conclusion that tasks involving the localization of objects or events from mirror images are not direct indices of self-recognition among children between 14 and 22 months of age. Rather, they indicate the skill of infants in using the mirror as a perceptual tool. (RH)

Reports two experiments examining the contents and accessibility of a subset of the knowledge represented in long-term memory by preschool-age children. The knowledge domain of object locations in the home was selected for study. Among the results, very young children revealed considerable knowledge in this domain. (Author/RH)

Kindergarten through eighth-grade children were presented with two revisions (luck and skill) of the Matching Familiar Figures Test. Questioning about performance of hypothetical others revealed four levels of differentiation of luck and skill. These levels showed parallels with age-related changes in conceptions of difficulty, effort, and…

Three experiments investigated effects of complexity on 2- to 6-year-olds' understanding of a beam balance. Found that 2- to 4-year-olds succeeded on problems that entailed binary relations, but 5- and 6-year-olds also succeeded on problems that entailed ternary relations. Ternary relations tasks from other domains (transitivity and class…

Two studies compared the effects of spontaneous and controlled imagery on reality monitoring decisions. Reality monitoring refers to the decision processes involved in discriminating perceptual memories from imaginal ones. In Experiment 1, 6-year-olds and adults were shown pictures and words and they responded to one of two questions: (1)…

Tested the hypothesis that increased task difficulty elicits more efficient problem-solving strategies from older adults, using "Twenty Questions" tasks with either 64 or 10,000 possible solutions. Although younger adults were more efficient, there was not evidence that task difficulty affected problem-solving for either age group. (Author/JAC)

Students (n=150) ages 11, 14, and 17 were asked to explain the meanings of 24 different idiomatic expressions. Performance on the task gradually improved as subject age increased. High-familiarity idioms were easier to explain than moderate-familiarity or low-familiarity expressions. Easier idioms tended to be more transparent. (Author/JDD)

With first-grade and college students, examines barrier effects as a function of the task used to assess subjects' cognitive maps. One group, asked to give rank-ordering judgments, had to keep an entire spatial layout in mind. The second group made direct estimates of the distance between two objects. (RH)

Results suggest that modeling can indeed affect the complexity of children's sentences even in the absence of reinforcement or instructions of imitate. (Authors)

Tested the hypothesis that increasing problem complexity elicits strategies of greater efficiency from older adults. Responses of older and younger adults were compared in a version of "Twenty Questions." No evidence was found that older adults seek more efficient strategies. Both groups maintained the same strategies. (Author/JAC)

Evaluation of the role of concreteness and familiarity in the development of proverb comprehension in 180 students in grades 5, 8, and 11 found that both concreteness and familiarity as well as student age, influenced comprehension. Results support the "metasemantic" and the "language experience" hypotheses of language comprehension development.…

Four experiments investigated the development of visuomotor control in sequential pointing in tasks varying in difficulty among 6- to 10-year-olds and adults. Comparisons across difficulty levels and ages suggest that motor development is not a uniform fine-tuning of stable strategies. Findings raise argument for stage characteristics of…

Twenty preschoolers and 10 student teachers were asked to reconstruct the complete layout of their classroom by using a small-scale model as well as by using life-size furniture in the classroom itself. Children's performances were significantly better in the classroom than they were on the model. (Author/MP)