Water and NaCl intake after furosemide treatment in sheep (Ovis aires)

Intravenous infusion of the natriuretic drug furosemide in sheep led to the excretion of large quantitites of hypotonic urine. The sheep consumed more water than was needed simply to restore osmotic equilibrium. The stimulus for the additional intake was presumably hypovolemia resulting from the loss of sodium in urine. Despite the natriuresis, in only 2 of 15 experiments did sheep drink significant amounts of .5 M NaCl solution during the first 10 hr after the onset of furosemide treatment, and hemoconcentration and arterial hypotension were evident during this time. By 24 hr, however, the saline consumption in all but three experiments had increased and compensated adequately (together with the water intakes) for the furosemide-induced loss of sodium-rich fluid in urine. These results provide evidence that following acute hypovolemia in sheep, as in rats, the onset of sodium appetite is delayed relative to the appearance of thirst.     

Koinonia and the therapeutic relationship

Pastoral Psychology -     

Preferential selection and stereotypes: Effects on evaluation of female leader performance,subordinate goal commitment,and task performance

In a laboratory setting, 135 undergraduate students (69 male, 66 female; approximately 98% white) completed a mock class scheduling task led by a female confederate who was chosen either preferentially or by merit. Results indicated that (1) subordinate evaluations of female leader performance were not affected by preferential selection, but were significantly related to degree of non-traditional views held toward female managers; (2) commitment to the goal assigned by the female leader was not lessened by preferential selection, but also was significantly related to degree of non-traditional views toward female managers; and (3) subordinate performance on the scheduling task was significantly related to commitment to the leader-assigned goal.     

Projection in surrogate decisions about life-sustaining medical treatments.

To honor the wishes of an incapacitated patient, surrogate decision makers must predict the treatment decisions patients would make for themselves if able. Social psychological research, however, suggests that surrogates' own treatment preferences may influence their predictions of others' preferences. In 2 studies (1 involving 60 college student surrogates and a parent, the other involving 361 elderly outpatients and their chosen surrogate decision maker), surrogates predicted whether a close other would want life-sustaining treatment in hypothetical end-of-life scenarios and stated their own treatment preferences in the same scenarios. Surrogate predictions more closely resembled surrogates' own treatment wishes than they did the wishes of the individual they were trying to predict. Although the majority of prediction errors reflected inaccurate use of surrogates' own treatment preferences, projection was also found to result in accurate prediction more often than counterprojective predictions. The rationality and accuracy of projection in surrogate decision making is discussed.     

Psychosocial Variables as Predictors of Psychological Stress–Induced Ischemia in the Laboratory

This study examined ischemic reactivity to a psychological stress protocol and whether psychological variables could reliably classify individuals as ischemic reactors. Participants were 54 male Veterans Administration patients who had or were suspected of having CAD. Psychological inventories were administered prior to a psychological stress protocol consisting of a surgical video, the Stroop Color–Word task, an arithmetic task, and discussion of a stressful event. Cardiac functioning was evaluated using an ECG Holter monitor and 23.53% of participants were classified as reactors. Mean differences between reactors and nonreactors were found for State Anger, Health Locus of Control—Powerful Others (MHLC-PO), and Depression. State Anger and MHLC-PO emerged as significant predictors of reactor status in logistic regression analyses. Models based on individual scale items suggested three items could be used to achieve higher classification rates. Implications for revising screening procedures for determining risk and possible mechanisms underlying psychological stress–induced ischemia are discussed.     

His and her marriage: A multivariate study of gender and marital satisfaction

This study examined gender differences in marital satisfaction using the multidimensional marital inventory ENRICH. Contrary to previous research, the results indicated that men are somewhat more satisfied with their marriages than women. The findings also suggest that religion is a more important part of the marriage for men, whereas women esposed egalitarian roles to a greater extent. A significant interaction was found between marital distress and gender on the Sexual Relationship, Communication, Parenting and Children, and Equalitarian Roles scales, indicating that these areas may be particularly important in distressed couples. The differences in husbands' and wives' marital satisfaction found in this study are consistent with research suggesting that men obtain greater mental health benefits from marriage than do women. The explanation of the obtained gender differences are discussed with regard to measurement issues, sampling procedures, and power and task inequities. Sampling and differences in marital tasks and power are cited as the best explanations of the findings.