Shane, who is in Ms. Jones's third-grade class, has autism. Ms. Jones has provided him with a schedule, a picture communication system, and a positive reinforcement system for his learning tasks. He is demonstrating progress toward his individualized education program (IEP) goals, but he still struggles with attending for any length of time,…

Objective: Since simulations are often accepted uncritically, with excessive emphasis being placed on technological sophistication at the expense of underlying psychological and educational theories, we evaluated the learning performance of simulation software, in order to gain insight into the proper use of simulations for application in medical…

This study examined physiological, emotional, and attentional regulatory functions as predictors of self-regulation in 125 infants followed 7 times from birth to 5 years. Physiological regulation was assessed by neonatal vagal tone and sleep-wake cyclicity; emotion regulation by response to stress at 3, 6, and 12 months; and attention regulation…

Psychophysiological measurements were compared for male college students classified as high and low in creativity. (DP)

The refractoriness of an extended arm swing to reversal was studied using three speed conditions (maximal, 2/3 of maximal, 1/3 of maximal). Twenty-two college males were the subjects. Interstimulus intervals (ISIs) ranged from .10 to .50 seconds with catch trials being used to minimize any tendency to anticipate the reversal signal. While reaction…

This study examined the extent to which 10 minutes of prior exercise (PE) at a workload adjusted to maintain a heart rate (HR) of 140 beats per minute could facilitate the mobilization of the oxygen transport system in a strenuous criterion task (CT). The control treatment involved completion of the CT following 10 minutes of rest on the…

Although golf is not a rigorous sport, it has its share of injuries. Greater attention to preplay stretching and conditioning programs and to the proper mechanics of the golf swing can help prevent injuries. (Author/CB)

The Food and Drug Administration has approved a prosthetic ligament for limited use in persons with damaged anterior cruciate ligaments (ACL). This article addresses ligament repair, ACL tears, current treatment, development of the Gore-Tex artificial ligament, other artificial ligaments in process, and arguments for and against their use.…

Discusses the neurobiological basis for functional specialization of the cerebral hemispheres, indicating that the size of the corpus callosum is correlated with the neurophysiological measure of hand preference. In postmortem examinations of 42 subjects there were no sex differences, but mixed-handers had significantly larger total areas of the…

Laments the neglect of discussion of active transport of plant nutrients from soil to root in general biology textbooks. (AL)

Examines the validity of the concept that the interaction of a single pollutant molecule with a cellular substance is necessarily associated with a deleterious result. Argues that such a no threshold" position is untenable. (AL)