Ophthalmological problems of the premature infant

Preterm infants are more likely than term infants to have significant abnormalities of all parts of the visual system leading to reduced vision. The most common problem is retinopathy of prematurity (ROP). The frequency and severity of this disorder is inversely related to gestational age. Damage ranges from minor to catastrophic. Preterm infants also have higher rates of amblyopia, strabismus, refractive error, and cortical visual impairment. The later problem is largely associated with neonatal brain injury. Years later, these children may develop glaucoma and retinal detachments.     

A preliminary scale for assessing attitudes toward homosexuals in the military

This paper reports a factor analytical study of responses to statements of attitudes concerning lesbians and gay men in the military by 72 23.4-yr.-old members of the U.S. Marine Corps Reserve. Using exploratory factor analysis with an oblique rotation four factors were found which accounted for 64.9% of the total common variance. A factor labeled Trust accounted for 40.6% of the common variance, Comfort accounted for 8.7%, Acceptance accounted for 8.2%, and the fourth factor, Threat, accounted for 7.5%. Cronbach a ranged from .63 to .78. Validity was .75 when scores were correlated with those on the Attitudes Toward Lesbians and Gay Men scale, supporting the 4-factor interpretation. It is recommended that additional factor analyses be performed to further investigate the validity of the four factors and that of the entire scale.     

Fierce Words: Repositionings of Caste and Devotion in Traditional rvaisnava Hindu Ethics

In the 13th and 14th centuries CE the ?rvaisnava Hindu community of south India struggled to integrate the traditional values of the older brahmanical hierarchical system with the devotional egalitarianism that had come to the fore with fresh force in the Tamil vernacular tradition in the 7^th and 8^th centuries and thereafter. One of the most vexed aspects of this integration pertained to caste, and whether devotionalism foreclosed a continuation of traditional caste distinctions: do divine love and grace mandate radical egalitarianism? ?rvaisnava theologians were divided on the issue, some more conservative, some more radical in their rhetoric about continuity and change. Yet, as this essay argues, none were willing to go to the extremes either of dismissing caste structures entirely or of entirely subordinating devotion to caste. New values were to take primary place, while old norms were to be reinterpreted and given new meanings. Analyzing well–known examples from the tradition they argued instead a balance between norms and exceptions, treating violations of caste as occasions to glorify the power of devotion but without predicting the end of caste altogether. Attention to this case sheds light on caste and devotion in the Hindu context, the nature of ethical debate in India, and consequently too ways in which rhetoric functions more widely in ethical analysis.     

Automatic attraction of attention to former targets in visual displays of letters

Shiffrin and Schneider (1977, Experiment 4d) reported that after consistent training in search for particular alphanumeric characters, presentation of one of these characters (former targets) as a distractor impeded detection of simultaneously presented current targets. Even if presented in an irrelevant display location, the former target appeared to attract attention. Here, we analyze weaknesses in the design of Experiment 4d and report four follow-up experiments ranging from a fairly close replication of the original multiframe experiment to a rather conventional single-frame search study. In each experiment, presentation of former targets consistently impeded detection of simultaneously presented current targets. The results suggest that automatic attention attraction to individual alphanumeric characters develops not only in the special experimental paradigm used by Shiffrin and Schneider, but also in standard visual search tasks. The fact that attention appeared to be attracted by shapes as complex as individual letters supports the assumption that simultaneously presented visual stimuli can be compared in parallel against memory representations of alphanumeric characters.     

Prescribing conventional antipsychotics at two Veterans Administration hospitals: are there geographical differences?

The medical records of 110 patients receiving conventional antipsychotics at two geographically distinct Veterans Administration hospitals (Syracuse, New York, and Omaha, Nebraska) were reviewed. The most common reasons for continuation of conventional antipsychotics were good response and patient or physician choice. Frequently, physicians did not discuss the reasons for continuing conventional antipsychotics or the availability of alternative therapies with their patients. Geographic differences in physicians' prescribing practices of conventional antipsychotics were apparent.     

The ups and downs of dating: fluctuations in satisfaction in newly formed romantic relationships

This research examined the association between relationship satisfaction and later breakup status, focusing on the temporal changes in satisfaction ratings of individuals in newly formed dating relationships. Growth curve analytic techniques were used in 2 longitudinal studies to create 4 predictors: each participant's initial level of satisfaction, linear trend in satisfaction over time, degree of fluctuation in satisfaction over time, and mean level of satisfaction. Consistent with hypotheses, individuals who exhibited greater fluctuation in their repeated satisfaction ratings were more likely to be in relationships that eventually ended, even after controlling for overall level of satisfaction. Individuals with fluctuating levels of satisfaction also reported relatively lower commitment. The results are discussed in terms of conditions that promote versus undermine relationship stability.     

Affect Generated by Social Comparisons Among Nurses High and Low in Burnout1

The affective consequences of social comparison were examined in 2 field studies among nurses and related to the 3 dimensions of professional burnout: emotional exhaustion, reduced personal accomplishment, and depersonalization. Study t was conducted in a sample of 99 nurses of a psychiatric hospital, and Study 2 in a sample of 237 nurses employed in various settings In general, upward comparisons evoked more positive and less negative affect than did downward comparisons. However, the affective consequences of social comparison were different for those high and low in burnout. Those low in personal accomplishment reported higher levels of negative affect from upward comparisons and higher levels of positive affect from downward comparisons than did those high in personal accomplishment. In addition, in Study 2, those high in depersonalization and emotional exhaustion derived more positive affect from downward comparisons than did those with lower levels of burnout.     

Differential effect of TEA on long-term synaptic modification in hippocampal CA1 and dentate gyrus in vitro.

The effectiveness of tetraethylammonium (TEA) and high-frequency stimulation (HFS) in inducing long-term synaptic modification is compared in CA1 and dentate gyrus (DG) in vitro. High-frequency stimulation induces long-term potentiation (LTP) at synapses of both perforant path-DG granule cell and Schaffer collateral-CA1 pyramidal cell pathways. By contrast, TEA (25 mM) induces long-term depression in DG while inducing LTP in CA1. The mechanisms underlying the differential effect of TEA in CA1 and DG were investigated. It was observed that T-type voltage-dependent calcium channel (VDCC) blocker, Ni2+ (50 microM), partially blocked TEA-induced LTP in CA1. A complete blockade of the TEA-induced LTP occurred when Ni2+ was applied together with the NMDA receptor antagonist, D-APV. The L-type VDCC blocker, nifidipine (20 microM), had no effect on CA1 TEA-induced LTP. In DG of the same slice, TEA actually induced long-term depression (LTD) instead of LTP, an effect that was blocked by D-APV. Neither T-type nor L-type VDCC blockade could prevent this LTD. When the calcium concentration in the perfusion medium was increased, TEA induced a weak LTP in DG that was blocked by Ni2+. During exposure to TEA, the magnitude of field EPSPs was increased in both CA1 and DG, but the increase was substantially greater in CA1. Tetraethylammonium application also was associated with a large, late EPSP component in CA1 that persisted even after severing the connections between CA3 and CA1. All of the TEA effects in CA1, however, were dramatically reduced by Ni2+. The results of this study indicate that TEA indirectly acts via both T-type VDCCs and NMDA receptors in CA1 and, as a consequence, induces LTP. By contrast, TEA indirectly acts via only NMDA receptors in DG and results in LTD. The results raise the possibility of a major synaptic difference in the density and/or distribution of T-type VDCCs and NMDA receptors in CA1 and DG of the rat hippocampus.