Behavioral training for myopia: generalization of effects

The present study assessed generalization of training effects using a video computer system (VCS) as a training medium for modifying acuity. Eighteen myopic volunteers were matched according to pre-training acuity and assigned to either fading and feedback training group or a practice only control. Subjects were pre- and post-tested on three measures: the Snellen Letter Chart, a Behavioral Acuity Test and a performance test with the VCS. Compared to controls, trained subjects displayed significant improvements in acuity on the Behavioral Acuity Test. These results suggest that training effects generalize to untrained stimuli. Implications for the clinical implementation of behavioral training procedures for modifying myopia are discussed.     

Independence of sensitivity on different foveal areas

Evidence suggests that for close retinal areas a correlation in sensitivity exists between the areas. Correlations as a function of distance from fixation and between areas were studied. In Experiment I, both forms were equidistant from fixation and five different distances apart. In Experiment II, both forms fell on an imaginary line through fixation. The forms usually did not fall on equally sensitive areas as in Experiment I. Both experiments showed that accuracy was lower for two- than for one-form displays. Closer forms had the lowest accuracy, suggesting perhaps mutual contour masking. However, in the sense of an intratrial correlation, no significant relationships were found. These two types of independence were discussed in terms of contour masking and varying sensitivity.     

Psychosocial Considerations in Sickle Cell Disease (SCD): The Transition from Adolescence to Young Adulthood

Sickle cell disease (SCD) occurs in 1 of every 400 to 500 African American births. Despite its prevalence, there has been a relative dearth of attention paid to SCD in the psychological literature. African American SCD adolescents and young adults, individuals at an already vulnerable developmental stage, are at increased risk for psychological distress and psychosocial impairments (e.g., depression and low self-esteem, poor social and academic/vocational functioning). Such difficulties often result in problematic adherence to medical regimens, and thus represent a potentially serious clinical and public health problem that merits the attention of psychologists working in medical settings. This article (1) reviews the psychosocial needs peculiar to SCD patients transitioning from adolescence to young adulthood; (2) applies a culturally informed stress-coping-adjustment framework to assess and address the psychological status, psychosocial functioning, and disease outcomes of these individuals; and (3) describes a culturally and developmentally sensitive, psychoeducational group intervention.