Walking without vision results in veering, an inability to maintain a straight path that has important consequences for blind pedestrians. In this study, the authors addressed whether the source of veering in the absence of visual and auditory feedback is better attributed to errors in perceptual encoding or undetected motor error. Three…

Twenty-six test variables for psychological differentiation and cognitive abilities were factor analyzed with a view towards replication of certain factors of perceptual and conceptual differentiation and related these factors to cognitive abilities. (Author)

Although numerous studies have indicated that older persons process visual information more slowly than younger persons, the precise nature of age-associated changes in the processing of visually presented information remains unclear. Older adults (N=18) and college students (N=18) performed a visual search task in which lists of words and…

The four papers in this collection discuss language perception and comprehension and report on experiments in those areas. The first paper, "The Influence of Non-Linguistic Knowledge on Perceiving and Verifying Sentences," discusses the reliance of language perception and comprehension on the interaction of linguistic and world…

Examines the perception of components of written and spoken codes of human communication from a broad perspective in an attempt to identify possible similarities. (GT)

We propose an "Enhanced Perceptual Functioning" model encompassing the main differences between autistic and non-autistic social and non-social perceptual processing: locally oriented visual and auditory perception, enhanced low-level discrimination, use of a more posterior network in "complex" visual tasks, enhanced perception…

This case report discusses the potential for art therapy to aid in the recovery of early-chronic stroke patients. The patient was diagnosed with having a subarachnoid hemorrhage from a cerebral aneurysm rupture 1 year prior to hospitalization. Therapies used as part of the patient's treatment included 10 weeks of art therapy conducted twice a…

Similar manifestations of functional decline in ageing and Alzheimer's disease obscure differences in the underlying cognitive mechanisms of impairment. We sought to examine the contributions of top-down attentional and bottom-up perceptual factors to visual self-movement processing in ageing and Alzheimer's disease. We administered a novel…

Background: Trials in developing countries suggest that improving young children's diet may benefit cognitive development. Whether dietary composition influences young children's cognition in developed countries is unclear. Although many studies have examined the relation between type of milk received in infancy and subsequent cognition, there has…

A study was conducted to determine the degree of relationship between eye movement patterns and cognitive mapping as determined by the Cognitive Style Mapping Instrument (CSMI). It was hypothesized that a high correlation exists between a predominance of visual and auditory eye movement patterns and the visual and auditory cognitive mapping styles…

This investigation of cognitive effort begins with a review of cognitive principles relating to memory and graphic encoding of information. The cognitive framework described allows explanation of improved memory due to reparsing of graphic representations. It also provides the basis for optimizing graphical material design to insure best retention…

Witkin's Embedded Figures Test (EFT) was used to measure the changes with age in field dependence and problem-solving ability. Qualitative data concerning problem-solving strategies and quantitative data were collected. EFT was administered to 12 females in each of the following decades: 20s, 30s, 40s, 50s, 60s, 70s. All subjects were moderately…

Morse code signals were presented dichotically to Morse code operators and to naive subjects with no knowledge of Morse code. The operators showed right ear superiority, indicating left hemisphere dominance for the perception of dichotically presented Morse code letters. Naive subjects showed the same right ear superiority when presented with a…

Contributions in the first section of this volume are: "Learning to Identify Toy Block Structures" by Patrick Winston; "Beyond the Yellow-Volkswagen Detector and the Grandmother Cell: A General Strategy for the Exploration of Operations in Human Pattern Recognition" by Naomi Weisstein; "Visual Recognition in a Theory of Information Processing" by…

The generation of dynamic mental imagery is known to facilitate paired associate (PA) learning in older subjects. Wolff and Levin (in press) have reported that children who were apparently too young to generate mental imagery of this kind did benefit from self-generated motoric interactions involving pairs of toys. Since the result was obtained…