Four studies compared static versus dynamic presentations of examples and nonexaples of the concepts "diagonal" and "conves," with nonhandicapped preschoolers, mildly handicapped primary students, and severely handicapped adults. Ss taught with a dynamic presentation learned the discrimination in significantly fewer trials, with performance either…

A pictorial system allowing receptive communication was implemented with one severely mentally retarded (SMR) and two autistic and SMR children (8.5, 10.4, and 12.8 years old). Although those low functioning children had shown severe problems in learning manual signs, they were successfully taught pictorial representations as communication means.…

The effectiveness of sound as a reinforcer of manipulative responses was studied with 50 infants four to 12 months old. Noisy toys were manipulated significantly more frequently than quiet ones by infants from six to 10 months old. (Author/SEW)

Investigated the effect of increasing familiarization time on the visual recognition memory of 6- and 12-month-old full-term and preterm infants. Results suggested that persistent differences exist between preterm and full-term infants throughout at least the first year of life in this fundamental aspect of cognition. (Author/RH)

The use of linguistic and extralinguistic information in identifying conversational topics from static and active picture stimuli was studied in three- and five-year-olds. While implicit topic definition was sufficient for five-year-olds' responses, explicit definition was necessary to evoke similar responses from the younger children. (MSE)

Tested hypothesis that task performance of Black children would be positively influenced by increased format variability. Results indicated that (1) the Black children had home environments higher in stimulation affordance than the White children, and (2) performance levels increased with variability in task presentation format only in the Black…

Effects of learning names for random nonsense shapes prior to a probe-type serial-recall task were investigated in disabled readers. No differences among reading groups on recall strength of primary recall were found, suggesting similar verbal skills. (Author)

Results from the data analysis show that children learn mathematical concepts for clear cases, and that an analysis of attributes common to examples of a given concept is not a prerequisite to concept formation. The protocol findings provide information as to why this may be happening. (Author/PN)

Sighted subjects assembled puzzles under separate conditions of visual-haptic perception and used vision and touch simultaneously to illustrate visual-type involvement and links in haptic encoding processes. A cognitive component in perceptions was found. When visual input was inadequate or independent of haptic perception, tactual information was…

An Ames static trapezoidal window was used to test infants' responsiveness to pictorial depth. Sensitivity to the pictorial information for depth that is present in the trapezoidal window appears to develop after the age of 22 weeks. (Author/DB)

Reports effects of context that are entirely perceptual. Visual discrimination was enhanced when line segments were flashed in a region that was perceived as a figure. Discrimination was substantially degraded when the same region was seen as ground although the physical stimulus remained identical throughout figure-ground reversals. (Author/JN)

Studies demonstrate increasing glucose metabolic rates in human primary (PVC) and association (AVC) visual cortex as complexity of visual scenes increase. AVC increased more rapidly with scene complexity than PVC and increased local metabolic activities above control subject with eyes closed; indicates wide range and metabolic reserve of visual…

Adults' geometric analogy solution was investigated as a function of systematic variations in the information structure of items. Latency data from verification of true and false items were recorded. A model incorporating assumptions about the form of item representation, working memory factors, and processing components and strategies was…

Subjects (N=48) attempted 24 trials of a psychomotor task to avoid aversive stimulus. Subject-experimenters, with solution expectancies instilled, offered information to subjects. Found that subject-experimenter expectancies were communicated to subjects via periodic comments. Expectancies affected subjects' task performance. Previous similar task…

Presents a proposed unifying relationship between instructional methods and cognitive operations, and argues that it is the location of the processing of the learning task that defines the function, type, and extent of the instructional method required. More than 50 references are listed. (MER)