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81.
Diurnal influences on natural killer (NK) cell changes to acute stress were assessed in 21 men and 21 women assigned to either an acute stress (mental arithmetic) or control task condition. Sessions began at either 8 a.m. or 2 p.m. Number of NK (CD3-CD56+) cells and NK activity were measured at baseline, during the 5-min task, and 60 and 90 min after the task. Both morning and afternoon stress participants had elevated NK cell numbers during the task. After the task, number of NK cells decreased in morning stress participants but remained significantly above baseline levels 60 and 90 min posttask. NK cell numbers in afternoon stress participants decreased to below baseline levels 60 and 90 min after the task. Changes in NK activity were driven primarily by diurnal influences. NK activity increased in all morning participants and stayed increased 60 and 90 min posttask. NK activity of all afternoon participants also increased during the task but dropped below baseline 60 and 90 min later. Greater increases in NK levels and activity during the task were associated with greater heart rate changes. 相似文献
82.
William M. Baum Randolph C. Grace 《Journal of the experimental analysis of behavior》2020,113(2):390-418
Matching theory is a general framework for understanding allocation of behavior among activities. It applies to choice in concurrent schedules and was extended to single schedules by assuming that other unrecorded behavior competes with operant behavior. Baum and Davison (2014) found that the competing activities apparently are induced by the “reinforcers” (phylogenetically important events, e.g., food) according to power functions. Combined with power-function induction, matching theory provides new equations with greater explanatory power. Four pigeons were exposed to conditions in which 7 different schedules of food delivery were presented within each experimental session. We replicated earlier results with variable-interval schedules: (a) a negatively accelerated increase of peck rate as food rate increased in the low range of food rates; (b) an upturn in pecking at higher rates; and (c) a downturn in pecking at extremely high food rates. When the contingency between pecking and food was removed, the food continued to induce pecking, even after 20 sessions with no contingency. A ratio schedule inserted in place of 1 variable-interval schedule maintained peck rates comparable to peck rates maintained by short interval schedules. We explained the results by fitting equations that combined matching theory, competition, and induction. 相似文献
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84.
Abstract The present study examined coping flexibility and correlates of this style of approaching stressful situations. Two methods for assessing coping flexibility, the Flex (Schwartz and Daltroy, 1991) and a modification of the Ways of Coping Checklist (Folkman and Lazarus. 1980) were administered to 28 men and 32 women, who were also asked questions about their age, gender, style of impression management (self-monitoring and social desirability), and basic personality variables from the Multidimensional Personality Questionnaire (Tellegen. 1982). Subjects responded to four common scenarios described by a 2 (social/nonsocial) × 2 (minor/major) matrix. Gender differences were not found for the Flex, but men exhibited more flexibility than did women when determined by the WOC range score. Older subjects exhibited smaller ranges on both the Flex and the WOC, suggesting that they were less flexible in coping than were younger subjects. Correlations with the Self-Monitoring scale approached significance for the Flex and were significant for the WOC. Greater flexibility was associated with greater well-being and achievement and negatively correlated with stress reactions and alienation. 相似文献
85.
The aim of the present study was to assess the predictive power of the processing of pain-related information, comprising concepts of hypervigilance to pain, pain catastrophizing, and pain-related anxiety (questionnaires) as well as attentional processes related to pain-related stimuli (dot-probe task) in explaining individual differences in experimental pain sensitivity (pressure/thermal pain threshold). In 160 healthy participants (ages 13-61; 80 females), results of hierarchical multiple regression analyses showed that self-reported hypervigilance contributed significantly to the prediction of pain sensitivity, whereas pain catastrophizing and anxiety did not. However, inconsistent with prediction, the effect was in the opposite direction, indicating that vigilance to pain sensations or stimuli is associated with lower pain sensitivity in healthy individuals. Entering the attentional bias indices from the dot-probe task showed that an increased bias to pain words is related to higher experimental pain sensitivity, which confirms the hypothesis. 相似文献
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87.
Kent D. Harber Lee Jussim Kathleen A. Kennedy Robin Freyberg Lisa Baum 《Journal of applied social psychology》2008,38(6):1463-1505
This research introduces the Social Support Opinion Survey (SSOS), the first measure of social support from the provider's perspective. Studies 1–3 developed the SSOS and confirmed that support opinions can be reliably characterized as directive (attempting to govern how others cope) and nondirective (facilitating without governing how others cope). Studies 4–6 showed that social support opinions relate to more basic cognitive, emotional, and interpersonal styles. Directive opinions were related to cognitive rigidity (need for structure, need for certainty, and just‐world beliefs) and to an exchange orientation. Nondirective opinions, in contrast, were related to emotional differentiation, use of emotions as information, empathy, and a communal orientation. Thus, people may reveal who they are by how they help. 相似文献
88.
Scott Baum 《Journal of Contemporary Psychotherapy》1997,27(1):61-86
Grounding is a concept in Bioenergetic Analysis which refers to a person's relationship to reality. This relationship is thought to encompass all aspects of reality, external physical reality as well as internal psychological reality. Using this conceptual framework, an effort is made to link the somatic structures and processes to the psychic structures and processes which go into the perception and understanding of reality. In this paper that framework is applied to the concept of grounding in people with borderline personality organization. Experiential, clinical and theoretical data are blended to elucidate both the experience of reality and the structural underpinnings of that experience in people organized in this way. Clinical interventions drawn from this theoretical standpoint are described, particularly as they relate to development of the ability to apprehend reality more fully. 相似文献
89.
Shari R. Baum 《Brain and language》1997,60(3):347-359
An auditory lexical decision task was conducted to examine rhyme, semantic, and mediated priming in nonfluent and fluent aphasic patients and normal controls. Overall, monosyllabic word targets were responded to faster when preceded by rhyming word and nonword primes than unrelated primes. Similarly, semantically related primes facilitated lexical decisions to word targets. No evidence of mediated priming emerged. Results for individual subjects suggest differences in patterns across the subject groups. Implications of the findings for the integrity of lexical access in aphasic patients are considered. 相似文献
90.