Results of two studies using the Esper paradigm to determine development of rule application and discovery are reported. Subjects learned and generalized when rule and structure were provided, but there was little evidence of rule discovery. Manipulations of memory and attention facilitated learning, but only attention facilitated rule discovery.…

Examined two hypotheses that might account for episodic-recall differences in preschool children: (1) young children's differential tendencies to attend to and interact with presented stimuli account for verbal free-recall differences, and (2) improvements in episodic-recall memory are knowledge-dependent among preschool children. (Author/DB)

The effects of a networking learning strategy upon facilitating the learning of field-dependent students are investigated. Results indicate that the strategy improves learning behavior of the field dependents on list learning and spatial learning. Learning behavior of field independents and field dependents is also compared. (Author/AEF)

To study improvement of visual monitoring of retardates, specialized training methods backed up by incentives were used. The extent to which these training techniques might be expected to produce results which would generalize was explored. Subjects were eight female mental retardates (ages 15-22) with IQs from 38 to 69. (Author/SJL)

Argues that mental images have functional properties similar to those of audiovisual media in that they can be intentionally and systematically used as the informational base for cognitive operations and as an aid to new learning. Experimental evidence is cited to support the claims. Nineteen references are cited. (Author/CHC)

Human performance on verbal and spatial matching tasks was assessed every 15 minutes for eight hours. Significant 90- to 100-minute oscillations were observed for each task. It was also found that increases in performance on one task are accompanied by decreases on the other. (HM)

Letter encoding is typically viewed as an automatic process that is both obligatory and interference free. In these experiments, either familiar or non-familiar primes produced significant amounts of interference even when subjects were trying to ignore the visual input. Early perceptual components of encoding are both obligatory and resource…

Five experiments investigated how completely and accurately adults remember the visual details of the common United States penny. Subjects had to draw a penny from unaided recall and select the correct representation of a penny. Performance was poor on all tasks. Implications for long-term memory models were discussed. (Author/RD)

Only 11 of 22 mildly retarded young adults successfully passed a criterion pretest involving discriminating pairs of upright same-different cones. The 11 Ss performed poorly on a second task involving a more complex transformation. Ss who failed the criterion task produced primarily egocentric responses. (Author)

Robust interference effects were found which declined with age. Manipulating discriminability of the relevant stimulus dimension resulted in large changes in sorting time, but interference effects did not vary with baseline difficulty. These results were interpreted as strongly supporting both an absolute decrement model and a developmental trend…

Two implications of best-example theory for category acquisition were tested using a set of artificial concrete object categories. Categories acquired from initial exposure to good exemplars were learned more easily and accurately. People learn the best exemplars are category members before learning the poor exemplars are category members.…

A visual search task for target letters in multiletter displays was used to investigate information- processing differences between college students and presecond-grade children. (Author/DB)

Comparing the effectiveness of four methods for training young children (4-4.5 years) in the skills of visual discrimination necessary to letter knowledge acquisition, this study indicates that training in oral description of critical cues of letters contributes to superior achievement in learning to match letters. (JC)

A study involving eight youths and adults with retinitis pigmentosa (and only 20 degree visual field and hearing loss of at least 20 decibels) determined variance in the ability to perceive and comprehend visual stimuli presented by way of the manual modality when modifications were made in configuration, movement speed, movement size, and…

The process by which 55 preschool children acquire the meanings of dimensional and expressive terms was investigated in relation to Eve Clark's semantic feature hypothesis. (Author/MP)