Neuropsychological findings relevant to the question of whether visual imagery is visual or perceptual are reviewed and compared to cognitive psychology theories. Imagery does not appear to represent information acquired through visual sensory channels; rather, it seems to use some of the same neural representational machinery as does vision. (SLD)

Current theories and research on distributed activation in sleep are reviewed, and a neurocognitive theory of sleep is presented that is based on distributed activation. Neural and cognitive relationships described by the theory are translated into connectionist models, and simulations are described. (SLD)

Discusses evidence for experience-dependent reorganization of adult and developing brains, examining changes in the mature brain as a result of experience, reorganization in the developing brain, and mechanisms of change. The paper notes that there is general agreement that experience can have a profound effect on the organization of the brain.…

This study examined the relationship between auditory, visual, touch, and oral sensory dysfunction in autism and their relationship to multisensory dysfunction and severity of autism. The Sensory Profile was completed on 104 persons with a diagnosis of autism, 3 to 56 years of age. Analysis showed a significant correlation between the different…

The investigation sought to prove that retarded conceptualization behavior of deaf children can be improved by specific compensatory experiences in the manipulation of objects. Twenty-six deaf children of normal intelligence but deficient in language as determined by reading achievement level, ages 10-13 years, were randomly assigned to…

This study was conducted to determine if (1) significant differences occurred in the total thought and language of a kindergarten classroom as a function of subject matter and time across the school year, (2) significant differences existed between the thought and language of the teacher and the children, and (3) significant differences occurred…

Describes subjective-contour illusions and gives explanations for perception of shape and brightness in these figures. Supports cognitive mechanisms rather than psychological mechanisms. Gives examples of subjective-contour illusions and summarizes explanations of other psychologists with regard to this topic. (CW)

Describes language as a vehicle of thought severely limited by auditory, kinesthetic, and visual images, restricted to linear succession, and precariously linked to meaning by standardized labels. (MB)

The experiment compared the visual sensory sensitivity of six deaf and six hearing Ss (mean age 11.2 years) in a signal detection paradigm. Ss were required to give forced-choice responses to a brightness discrimination task under three stimulus probability conditions. (Author/PHR)

A model is presented that describes four types of emotion-activating systems, three of which involve noncognitive information processing. The four systems are neural, sensorimotor, motivational, and cognitive. They may be seen as a loosely organized hierarchical arrangement, operating under a number of constraints. (SLD)

An experiment with 66 six-year-old children showed that children asked more and better questions about unfamiliar objects (toys) when they had been given an opportunity to manipulate them than when they saw only demonstrations of the toys. (NH)

A theory of visual information acquisition and visual memory is described that conjoins two models that have been used to describe low-level perceptual and higher level cognitive processes. Six experiments with 21 adult observers generally support the theory, although some weakness is discussed. (SLD)

One of the most challenging concepts for preservice and experienced art teachers is to comprehend the difference between aesthetics and art criticism. In this article, the author discusses aesthetics from a historical perspective and reflects on how it can be defined and used in the art classroom. Gardner's (1983) intrapersonal and interpersonal…

In comparative judgments of two stimuli separated by a time interval, there is often a systematic asymmetry (time-order error). From a review of the literature it is concluded that the time-order error should be classified as a perceptual phenomenon that can be predicted with adaptation-level theory and sensation weighting. (Author/CB)

A new theoretical analysis of the stop-signal model is proposed. Within the concepts of crude- and net-hazard functions, the nonobservable control-latency distribution can be estimated from observable reaction times. This result allows a test of the Logan and Cowan model (1984) without simplifying assumptions. (SLD)