Perceived angle of incidence and achromatic surface color

Theory and evidence proposing illumination, and therefore necessarily angle of incidence of light, as a perceptual cue for lightness judgments are described. In two experiments, angle of incidence was varied by having 46 Ss view an upright trapezoid that monocularly appeared flat and binocularly, upright. In the first experiment, numbers of cues to the direction of a fixed source above the trapezoid were varied and combined. In a second experiment, the background for an illumination gradient was varied. Angle of incidence and cues to the location of the source did predict the trends in lightness judgments but not the magnitude of the effects. An alternative explanation to cue theory is proposed.     

An experimental test of Jameson and Hurvich’s theory of brightness contrast

Two hundred and fifty-two brightness functions for seven simultaneously presented black, gray, and white squares on black, gray, and white backgrounds approximated power curves with positive exponents when illuminance was varied in seven steps over 1.9 log fL. Mean exponents were significantly larger for whiter vs blacker squares and for squares on the white vs the gray background. Mean exponents also increased more for squares on white than on black or gray backgrounds. Finally, a white replacing a black background elicited increasingly larger decremental responses as the squares varied from black to white. Jameson and Hurvich’s opponent-process theory, tested by the experiment, was not predictive.     

Ego psychology and pastoral counseling

Conclusion Implicit in this entire consideration is the recognition that pastoral counselors need a differential methodology, and that the major divisions of such an approach are insight and supportive counseling. Skill in both insight and supportive counseling will markedly enhance the pastor's ability to be a therapeutic agent in the lives of those who seek his help.     

The Association between Religious Discrimination and Health: Disaggregating by Types of Discrimination Experiences,Religious Tradition,and Forms of Health

Research finds that experiences of religious discrimination are often associated with poorer health outcomes. However, there remain important questions to consider gaps, including whether religious discrimination has similar health impacts on religious minority groups and religious majority groups, whether religious discrimination is equally harmful for both mental and physical health, and whether specific types of discrimination have different impacts on health. Using survey data from a probability sample of U.S. adults and measures representing a variety of discrimination experience types, our analyses suggest that religious discrimination is indeed harmful for health, but that experiences of religious discrimination do not universally affect mental and physical health in the same ways. Rather than significant differences in the health impacts of religious discrimination across different religious groups, we find more variation in the health impacts of different types of experiences with discrimination. Further, we find that mental health is negatively impacted by a wider range of experiences with religious discrimination than physical health. These findings are in line with social psychological research on the differential health impacts of discrimination, and they highlight the importance of context in studies of the health effects of religious discrimination.     

Chronic Auditory Agnosia Following Landau-Kleffner Syndrome: A 23 Year Outcome Study

We report a 27-year-old woman with chronic auditory agnosia following Landau-Kleffner Syndrome (LKS) diagnosed at age 4 1/2 . She grew up in the hearing/speaking community with some exposure to manually coded English and American Sign Language (ASL). Manually coded (signed) English is her preferred mode of communication. Comprehension and production of spoken language remain severely compromised. Disruptions in auditory processing can be observed in tests of pitch and duration, suggesting that her disorder is not specific to language. Linguistic analysis of signed, spoken, and written English indicates her language system is intact but compromised because of impoverished input during the critical period for acquisition of spoken phonology. Specifically, although her sign language phonology is intact, spoken language phonology is markedly impaired. We argue that deprivation of auditory input during a period critical for the development of a phonological grammar and auditory–verbal short-term memory has limited her lexical and syntactic development in specific ways.     

Neurobiology of Cocaine-Induced Organic Brain Impairment: Contributions from Functional Neuroimaging

The present review is directed at imparting the current knowledge regarding functional neuroimaging as a tool for enhancing the understanding of cerebrophysiologic and neurobehavioral consequences of stimulant abuse. Stimulants like cocaine are capable of inducing clinically significant neurocognitive impairment through direct action on the brain, and indirectly through other organs that influence cerebral physiology. Neurochemical dysregulation including profound effects on the serotonergic and dopaminergic systems have substantial physiological and neurobehavioral consequences. Brain hemorrhages, transient ischemic attacks, strokes, and seizures frequently follow cocaine use. The residual cerebropathologic consequences of cocaine are seen only in significant or pronounced brain events when structural neuroimaging techniques such as computed tomography (CT) and magnetic resonance imaging (MRI) are employed. However, recent research with newer functional neuroimaging techniques such as single photon emission, positron emission tomography, and quantitative electroencephalography have revealed high rates of significant alteration in brain function among cocaine users, with negative structural imaging studies. These findings are often associated with impairment on neuropsychological evaluation, also in the absence of positive findings on CT and MRI. Both cerebral metabolic and hypoperfusion anomalies are seen, especially in anterior and temporal brain regions. Observed changes can persist for months, and for some patients, may represent a permanent change in brain functioning.