This article reviews the theoretical and research literature on vision stimulation and vision training of children with severe irreversible visual impairments. It recommends early stimulation to prevent visual deprivation, use of operant conditioning, and the presentation of highly contrasting stimuli to stimulate visual awareness in children with…

Reviews research literature on television's influence on children's fantasy play. Notes evidence that television viewing absorbs time that children would otherwise spend in play and that television's influence on play depends on the types of programs watched. Examines whether television viewing influences fantasy play positively or negatively and…

Notes that, to enhance a baby's brain development, more stimulation is not necessarily better. Suggests that parents strike a balance by following baby's cues about what makes him or her happy, curious, or bored; read to the baby often; and allow them time and space for individual exploration. Also suggests setting guidelines and limits for…

Using data from a national sample of 388 Latino young adolescents, this study identified the social-demographic characteristics, influences in the broader social environment, and parenting practices that predict youth academic achievement. Youths who were Mexican American, older, and had an English language problem had lower levels of reading and…

In these two studies, two children with multiple disabilities and minimal motor behavior were assessed to see if they could use chin movements to operate microswitches to obtain environmental stimulation. In Study I, we applied an adapted version of a recently introduced electronic microswitch [Lancioni, G. E., O'Reilly, M. F., Singh, N. N.,…

A concurrent-operants design was used to analyze the repetitive behavior of observing reflective surfaces while simultaneously engaging in erratic gross-motor body movements (EBMs) exhibited by a young boy diagnosed with autism. The assessment involved an evaluation of preference for controlled (i. e., the participant controlled the visual…

Acetylcholine release in sensory neocortex contributes to higher-order sensory function, in part by activating nicotinic acetylcholine receptors (nAChRs). Molecular studies have revealed a bewildering array of nAChR subtypes and cellular actions; however, there is some consensus emerging about the major nAChR subtypes and their functions in…

We previously showed that prenatal choline supplementation could increase the precision of timing and temporal memory and facilitate simultaneous temporal processing in mature and aged rats. In the present study, we investigated the ability of adult rats to selectively control the reinforcement-induced resetting of an internal clock as a function…

Procedural and declarative memory systems are postulated to interact in either a synergistic or a competitive manner, and memory consolidation appears to be a highly critical stage for this process. However, the precise cellular mechanisms subserving these interactions remain unknown. To investigate this issue, 24-h retention performances were…

The working-memory functions of the prefrontal cortex (PFC) are improved by stimulation of postsynaptic, [alpha]2A-adrenoceptors, especially in aged animals with PFC cognitive deficits. Thus, the [alpha]2A-adrenoceptor agonist, guanfacine, greatly improves working-memory performance in monkeys and rats following systemic administration or…

In a recently developed in vitro analog of appetitive classical conditioning of feeding in "Aplysia," the unconditioned stimulus (US) was electrical stimulation of the esophageal nerve (En). This nerve is rich in dopamine (DA)-containing processes, which suggests that DA mediates reinforcement during appetitive conditioning. To test this…

Applying optimal stimulation theory, the present study explored the development of sustained attention as a dynamic process. It examined the interaction of modality and temperament over time in children and adults. Second-grade children and college-aged adults performed auditory and visual vigilance tasks. Using the Carey temperament…

This report compares two approaches to incentive motivation in 82 college juniors and seniors, average age 21 years. One method uses will as a motivator; the other method focuses on skill or effective strategy use for enhancing recall and understanding of a particular body of information. In the first approach, a semiweekly test or spotquiz was…

Two studies were carried out in 1991-92 in Brisbane, Australia on the effects on frail elderly people of cognitive challenge by teleconference. In the first study, 20 residents of aged care centers watched specified programs on television. Later, they discussed the content over the telephone using conference link equipment. The study found that…

The paper focuses on the needs of visually impaired preschoolers in various developmental areas. The importance of attachment to a significant other for establishing trust is outlined and the fact that body awareness, object permanence, range of motion, spatial awareness and orientation must be logically and actively introduced is cited. Aspects…