Health and Well-Being in Highly Cohesive Units of the U.S. Army1

A large civilian literature on the role of social support in health and well-being suggests that military units high in unit cohesion should provide their members both significant protection from physical and mental illness and high levels of job satisfaction. This hypothesis was tested with a questionnaire survey of soldiers in Special Forces “A-teams”, generally viewed as the U.S. Army's most cohesive permanent units. As predicted, A-team soldiers reported greater physical and psychological well-being and greater satisfaction with job and career than did soldiers in conventionally organized units, be they Special Forces, airborne, or mechanized infantry. The best predictors in our battery of demographic, personality, and cohesion measures were ratings of social support from and satisfaction with one's Army unit, and relatively more “internal” scores on the Rotter locus-of-control scale. From these data and extensive participant observation we conclude that unit cohesion provides the soldier considerable protection from the stresses of military life, even in peace, and that it is organizational rather than individual variables that are primarily responsible for the very high levels of cohesion and/or social support in Special Forces A-teams.     

A long-term follow-up case study of crossed aphasia assessed by single-photon emission tomography (SPECT), language, and neuropsychological testing

A 65-year-old man with well-defined crossed aphasia secondary to right cerebral infarction 10 years previously was studied for current language and cognitive abilities and regional cerebral blood flow (rCBF) during cognitive activation measured by single-photon emission tomography (SPECT). Reversed hemispheric lateralization was demonstrated by qualitative aspects of the patient's constructional deficits, dominant parietal lobe signs, and absence of the neglect syndrome. Language activation procedures during SPECT produced focal increases in rCBF to both frontal lobes with a phoneme detection task and to right temporal and parietal lobes with a math task. The authors stress the complexities of assessing brain/language mechanisms in vivo and demonstrate variabilities in rCBF during language activation dependent on task selection.     

Gender differences in perceived intimacy with different members of adolescents' social networks

Previous research has clearly established important gender differences in how intimacy is viewed within a narrow set of relationships, primarily those with same-sex peers. This article presents a new social pressures model that delineates a set of diverse forces believed to influence gender differences in intimacy across a much wider set of social relationships during early adolescence. Although it was impossible to examine the actual operation of the postulated pressures, an extensive data set on all the important people in the lives of over 2000 seventh- through tenth-grade white suburban adolescents made it possible to test a set of 22 hypotheses derived from the model. These hypotheses covered relationships with nuclear, extended family, and nonkin members of the social network who were of different ages and genders. Results indicated that, while gender differences in the perceived intimacy of relationships were widespread, they were neither present in all types of relationships nor were those found always in the same direction. Furthermore, the social pressures model developed accurately predicted both the location and direction of the gender differences across most of the 22 different types of relationships. Suggestions for an elaboration of the model are noted, along with additional research issues that need to be addressed.     

Justification,sociality, and autonomy

Theories of epistemically justified belief have long assumed individualism. In its extreme, or Lockean, form individualism rules out justified belief on testimony by insisting that a subject is justified in believing a proposition only if he or she possesses first-hand justification for it. The skeptical consequences of extreme individualism have led many to adopt a milder version, attributable to Hume, on which a subject is justified in believing a proposition only if he or she is justified in believing that there is testimony in favor of the proposition deriving from a reliable source. I argue that this Humean individualism also leads to skepticism in a wide range of cases; it makes it impossible for a layperson to be justified on expert testimony. In addition, I argue that the apparent motivation for the Humean view, an insistence on intellectual autonomy in justification, does not succeed in motivating it. I then explore the contours of a collectivist view of justification on testimony, with special attention to the place of a subject's intellectual autonomy in such justification. I try to bring empirical results of the psychology of persuasion to bear on the epistemological issues.     

Correlates of malingering

The author presented anonymous questionnaires to 172 patients and 160 medical students to assess the frequency and correlates of malingering in various groups in a medical center on a V.A. campus. The results indicate that sociopaths, drug abusers, and alcoholics are more prone to malinger than other individuals, supporting previous assertions that mental health professionals should have a higher index of suspicion for malingering in these diagnostic groups. Race and age were found to have small but significant correlations with malingering, but at present, this finding must be viewed cautiously. No association was found between somatization disorder and malingering.     

Effect of preacquisition UCS exposure on classical conditioning of the rabbit's nictitating membrane response

Conditioning of the rabbit nictitating membrane response was found to be inversely related to the number (0, 50, 200, 350) and intensity, (0, 1, 3, 5 mA) of preacquisition UCS exposures and directly related to the interval between preexposure and acquisition (0 or 24 hr). The results were discussed in terms of sensory adaptation, habituation, blocking, and emotional reactivity.     

The possible loces of lightness contrast

Evidence that the magnitude of simultaneous contrast depends upon retinal orientation of a stimulus configuration is presented in two experiments. More specifically, the magnitude of contrast was found to be greater for stimuli presented horizontally and vertically than for stimuli presented obliquely. These results were interpreted in terms of a cortical analysis of simultaneous contrast.     

Work values and work interests: Are they the same?

The hypothesis that the VPI and WVI are measuring the same domain based on theoretical similarities was tested using 195 male freshmen students. The data were analyzed by correlational technique including discriminant analysis. The results allow for the interpretation that the VPI and WVI are in fact measuring two distinctive domains.     

When are semantic targets detected faster than visual or acoustic ones?

Duration-discrimination data from an experiment using empty auditory intervals in a two-alternative forced-choice paradigm are presented. The observed functional relationship between standard deviation of the psychometric density function and stimulus duration is shown to be fit significantly better by a Weber’s law model of duration discrimination than by Creelman’s counter model. Both models fail to predict the rapid rise in the Weber fraction observed for durations longer than about 2 sec. However, the Weber’s law model, based on a generalization of Weber’s law, accurately predicts the initial drop in the Weber fraction for very short durations and the observed constancy of the Weber fraction for durations up to 2 sec.