After learning to discriminate tactually between a convexity and a concavity, 101 children aged three to eight years were presented a photograph of the convexity and the concavity. The relevance of egocentric, environmental, and lighting-specified frames of reference was manipulated by changing the position of the subject's head, rotating the…

The results of three experiments showed that: (1) children from 20 to 32 months of age are able to identify basic-level, conceptual, and complementary relationships; (2) objects are responded to more effectively than pictures; and (3) both perceptual and verbal-symbolic processes are important in matching and identifying stimuli. (JMB)

The results suggested that profoundly retarded children do show habituation and dishabituation to visual stimuli and are actively storing and processing information about their perceptual world. (Author/DLS)

Defines holography, identifies visual factors in driving and the techniques used in on-road visual presentations, and presents the design and testing of a holographic system for driver training. (RAO)

Visual pattern preferences were established for 96 9- and 13-week-old infants using stimuli varying in contour density presented either at a low, moderate, or high luminance level. Age differences in the maximally preferred patterns across stimuli and luminance levels indicated that luminance interacts with contour density in determining stimulus…

Children listened to a fairy tale and were then asked to draw a picture that the story brought to mind. It was hypothesized that hearing a fairy tale would stimulate archetypal images, rather that the action-related scenes that might be prompted by reading it. (SB)

The ability of forty 8-week-old infants to discriminate between projected-stereograms with and without retinal disparity was tested with an habituation-dishabituation paradigm. Results were interpreted as indicating that the infants could discriminate between stimuli when the only difference between them was binocular disparity. (MS)

Three experiments, employing conditioned suppression in rats, examined the extent to which pretraining on one element of a compound stimulus blocked conditioning to the other element when some feature of the reinforcer was changed on compound trials. (Editor)

The research reported here was directed at evaluating whether or not the effectiveness of a Pavlovian unconditioned stimulus (US) in promoting associative learning is reduced if the US is shortly preceded by another occurrence of the same US. (Author)

By using the concept of modalities (learning processes involving the auditory and/or visual realms) systematically, a teacher may be sure that all modality tasks are covered and that reading weaknesses and strengths are discovered. (MB)

Recent data indicate that the form of the conditioned response (CR) may often be substantially influenced by the characteristics of the conditioned stimulus (CS) as well as by those of the unconditioned stimulus (US). Here five experiments examine the influence of CS characteristics on the form of the Pavlovian CR anticipatory to a food US in…

Sequences of seven tones were presented, and recognition memory for individual tones of each sequence was tested under varying degrees of context. (Editor)

Demonstrates that categorization of speech sounds can be influenced by the phonetic structure of connected speech. (Editor/RK)

This article is concerned with the perceptual load in searching for a number of kinds of target which are presented for a fixed, short period of time. The aim is to establish data which any acceptable model of human information processing will need to fit. (Author)