Affect intensity and cardiac arousal.

Investigated in 3 experiments the relationships between affect intensity and basal, evoked, and perceived cardiac arousal. Affect intensity was assessed using R. J. Larsen and E. Diener's (1987) Affect Intensity Measure (AIM). Cardiac arousal was evoked with exercise in the 1st study and with mental arithmetic in the 2nd and 3rd. Perceived cardiac arousal was measured under optimal conditions using a standard heartbeat discrimination procedure. Women as a group scored higher on the AIM. Affect intensity was unrelated to basal or evoked cardiac arousal and was negatively related to perceived cardiac arousal in all 3 studies. Data suggest that affect intensity, although unrelated to actual physiological arousal, is negatively related to the accuracy with which individuals perceive their own arousal. Results are discussed within the context of an expanded arousal-regulation model (J. Blascovich, 1990). (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Attitude accessibility as a moderator of autonomic reactivity during decision making.

Attitude functionality was assessed in 2 experiments examining attitude accessibility as a moderator of physiological responses during decision making. In Study 1, experimental Ss but not controls rehearsed attitudes toward novel objects (abstract paintings). Subsequently, all Ss made rapid preference judgments for pairs of the paintings. In Study 2, attitudes were rehearsed by all Ss toward 1 of 2 mutually exclusive sets of abstract paintings. During the subsequent decision-making task, half the Ss made rapid pairwise preference judgments for rehearsed abstract paintings and half for pairs from the unrehearsed set. Autonomic measures were recorded continuously throughout both experiments. As predicted, in both experiments less autonomic reactivity was evident during the criterion pairwise preference task for groups for whom attitude rehearsal was relevant to the criterion task. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Subjective, physiological, and behavioral effects of threat and challenge appraisal.

The applicability of R. S. Lazarus and S. Folkman's (1984) cognitive appraisal model of stress was examined in 3 laboratory experiments involving the repeated performance of active (Studies 1, 2, and 3) and passive (Study 3) coping stress tasks (P. A. Obrist, 1981). Threat appraisals of upcoming coping tasks were positively related to Ss' self-reported task stress. Cardiac reactivity during active coping stressors was related positively to challenge appraisals and negatively to threat appraisals. Vascular reactivity, however, was related positively to threat appraisals and negatively to challenge appraisals. During passive coping stressors, cardiac and skin conductance reactivity were related positively to threat appraisals. The fractionation of self-report and physiological measures during active coping was interpreted in terms of energy mobilization and effort. The implications for the use of physiological measures as indicators of stress are discussed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Cognitive and physiological antecedents of threat and challenge appraisal.

Cognitive appraisal theories of stress and emotion propose that cognitive appraisals precede physiological responses, whereas peripheralist theories propose that physiological arousal precedes cognitive processes. Three studies examined this issue regarding threat and challenge responses to potential stress. Study 1 supported cognitive appraisal theory by demonstrating that threat and challenge cognitive appraisals and physiological responses could be elicited experimentally by manipulating instructional set. Studies 2 and 3, in contrast, found that manipulations of physiological response patterns consistent with challenge and threat did not result in corresponding changes in cognitive appraisal. Appraisals in Study 3, however, were related to subjective pain independent of the physiological manipulation. These studies suggest a central role for cognitive appraisal processes in elicitation of threat and challenge responses to potentially stressful situations. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Effects of justice beliefs on cognitive appraisal of and subjective physiological, and behavioral responses to potential stress.

Investigated the moderating role of just world beliefs on stress and coping processes. Ss high and low in belief in a just world were asked to perform a potentially stressful laboratory task, which was repeated once. Cognitive appraisals and subjective, autonomic, and behavioral responses were recorded for each of the 2 tasks. The results supported a stress-moderating effect for just world beliefs. lndividuals high in just world beliefs had more benign cognitive appraisals of the stress tasks, rated the tasks as less stressful post hoc, had autonomic reactions consistent with challenge (vs threat), and outperformed Ss low in just world beliefs. Discussion centers on factors that moderate the experiences of challenge and threat in potentially stressful situations. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Assertiveness predicts threat and challenge reactions to potential stress among women.

In this study assertiveness as a moderator of stress reactions among women was examined. Specifically, the experimenters examined how high and low assertive women cognitively appraised, affectively and physiologically responded to, and behaviorally coped with the stress of giving an impromptu speech. High assertive women appraised the speech stressor as challenging, whereas low assertive women appraised the stressor as threatening. High assertive women also had a challenge pattern of autonomic response during the task, compared with the threat response of low assertive women. Afterward, the high assertive women reported experiencing less stress and negative emotion and greater positive emotion than did the low assertive women. Overall, the high assertive women's stress-related reactions indicated challenge, whereas the low assertive women's reactions indicated threat (see J. Tomaka, J. Blascovich, R. M. Kelsey, & C. L. Leitten, 1993). (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Patterns of emotion-specific appraisal, coping, and cardiovascular reactivity during an ongoing emotional episode.

The authors examined emotion-specific patterns of appraisal, coping, and cardiovascular reactivity during real ongoing emotional episodes. In this study, 109 participants performed a neutral opinion-expression task, where a confederate elicited anger, shame, or pride using verbal and nonverbal behavior. The authors assessed cognitive appraisals, emotional reactions, coping, outcomes (state self-esteem and outcome satisfaction), and cardiovascular reactivity. Results indicated substantial and theoretically consistent differences between the 3 emotions (and differences from a nonemotion condition) for cognitive appraisals, self-reported coping, behavioral coping, self-esteem, and cardiovascular reactivity. The results are discussed in relation to their implications for emotion theory and for psychological and physical health. Overall, the results suggest that researchers can study emotion-related issues using authentic emotional reactions. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Application of magnetophonon resonance to control the thermal stress in multiple quantum wells

The paper deals with the changes of band structure parameters under deformation. The values of these changes are calculated for the GaAs/AlGaAs structure of multiple quantum wells. The role of magnetophonon resonance as a method to evaluate the thermal stress in MQWs at the parallel charge carriers transport is emphasised.