Interactive effects of deprivation in the albino rat

The interactive effects of feeding and drinking schedules were investigated in three experiments. Twenty-four hour water-deprived rats consumed their entire obligatory water intake prior to feeding, whereas 24-hr food-deprived rats consumed only small quantities of food prior to drinking. This drinking was apparently due to a shift of water stores rather than an actual negative water balance. Experiment 3 investigated the effects of 24, 48, or 72 hr of water, food, or total deprivation. Water-deprived rats did not adequately suppress food intake and became thirstier than totally deprived rats. The effects of total deprivation were essentially identical to those of food deprivation. These experiments indicate the degree to which deprivation schedules impose restrictions on the reinforcement parameters of behavioral experiments.     

Multiple factors in short-term behavioral control of protein intake in rats.

The availability and concentration of dietary protein was varied in an examination of the nature of the day-to-day intake of protein solutions by 60-day-old male rats. It was found that the rats consumed a remarkably constant absolute amount of protein each day, adjusting overall caloric intake to maintain protein at a roughly constant proportion of total calories. Factors such as the time of access to a protein source or the extent of prior experience with a protein source were seen to influence the overall constancy of protein intake, whereas daily shifts in preference between two available concentrations of protein did not interfere with such short-term control. The mechanism for this behavioral control is likely to be different from mechanisms mediating the conditioned response to dietary protein, as in the response to dietary amino acid imbalance.     

Chronic stress and coping styles: a comparison of male and female undergraduates

Male and female coping behaviors were compared in order to test the theory that men use instrumental coping strategies more frequently than women, who are thought to use emotion-focused coping solutions. We interviewed 51 female and 39 male first-year undergraduates by telephone three times a week for 8 weeks, using an inventory developed for 28 chronic stressors. Analyses of variance were used to test gender differences in frequency of daily stressors, concomitant perceptions of stress, and utilization of problem-solving behaviors. The majority of analyses showed no gender differences. The implications of these findings are discussed in light of cultural expectations.     

REFLECTIONS ON THE FIRST TWENTY YEARS OFCASIRAS: A PERSONAL REVIEW

Abstract. The history of CASIRAS and of Zygon is not only anintellectual history but a personal history-a history of humanencounter with hopes and disappointments, dreams and conces-sions. Notwithstanding, it is the story of an ambitious enterprisewith significant achievements and genuine promise of continuedcontributions to this important inquiry.     

When Thoughts Turn Toward Nuclear War: Stress Responses,Coping Strategies,and the Importance of Trait Anxiety in Moderating Effects on “Mental Health”1

The present investigation attempted to link the concept of Nuclear Anxiety (NA) to theory and research on stress and coping, which would predict that person variables would be extremely important in determining the amount of anxiety precipitated by the hypothetical and ambiguous nature of nuclear war. In Part I of this study, 356 undergraduates were divided into high and low NA groups on the basis of state anxiety experienced while thinking about the threat of nuclear war. Groups were compared on five personality traits (trait anxiety, death anxiety, and three locus of control variables), two “mental health” indices (psychological well-being and expectancy for future goal attainment), five nuclear war-related attitudinal measures, nine nuclear threat orientations, nine strategies for coping with the threat, and a single behavioral measure of approach toward information about nuclear war. In Part II, the relationships between key explanatory variables were explored, and a preliminary model of Nuclear Anxiety was developed. Results revealed that the two NA groups differed on 22 of the 32 dependent measures, and that four variables (i.e., sustained [nuclear] concern, death anxiety, trait anxiety, and psychological well-being) were the best group discriminators. More importantly, path analysis revealed that trait anxiety rather than nuclear anxiety was the variable primarily controlling “mental health” status. Results are discussed with regard to the resiliency and adaptability of young people in dealing with the threat of nuclear war, intergroup differences in coping styles, and questions in need of further empirical attention.     

Effects of musically evoked affect on women's interpersonal attraction toward and perceptual judgments of physical attractiveness of men

In a between-subjects design, female subjects evaluated photographs of attractive and unattractive stimulus males while listening to positive affect-evoking rock music, negative affect-evoking avant-garde music, or no music at all. Consistent with previous research, subjects evaluated attractive stimulus males more positively than unattractive males on a variety of interpersonal judgment dimensions. Furthermore, subjects responded with more positive evaluations of personal character of, and attraction toward, stimulus persons in the rock music as compared to the avant-garde music condition. Finally, assessments of physical attractiveness were influenced by the music conditions, with stimulus persons judged of greater physical attractiveness in the rock as compared with the avant-garde music condition. The results are discussed in terms of extending the Byrne-Clore reinforcement-affect model of interpersonal attraction.     

A comparison of simple correction and functional feedback in schema learning

The role of knowledge of results (KR) in a schematic concept formation task was clarified by manipulating the specificity of information provided during feedback. Ss learned to discriminate between pairs of random forms from two schema families. Verbal correction was compared with a functional KR procedure in which the schema prototypes were superimposed over test stimuli. In no case did verbal correction improve learning in comparison with functional KR. Differences in acquisition persisted in a retention test.