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231.
Rats received habituation to either 2 compound flavors (AX and BY; the activation group) or a compound and an element alone (AX and Y; the habituation group). They also received additional presentations of Y alone either after (Experiment 1) or intermixed (Experiment 2) with habituation. In the habituation group, A had undergone habituation whereas B had not; in the activation group, both A and B had undergone habituation, but presenting Y alone should result in associative activation of B and that, according to G. Hall (2003), should increase B's efficacy. A supplementary experiment demonstrated that the presentation of Y does activate a representation of B. In both experiments, an aversion was established to AB, and subsequently the habituation group showed a greater aversion to B than to A. However, in neither experiment was there any indication that the activation group showed a greater aversion to B than to A. These results are inconsistent with the suggestion that the associative activation of a stimulus representation in the absence of the stimulus reverses the effects of habituation training. 相似文献
232.
Two independent research traditions have focused on social contributions to lynching. The sociological power threat hypothesis has argued that lynching atrocity will increase as a function of the relative number of African Americans. The psychological self-attention theory has argued that lynching atrocity will increase as a function of the relative number of mob members. Two series of analyses (one using newspaper reports and the second using photographic records) using different and nonoverlapping samples of lynching events rendered a consistent pattern of results: Lynch mob atrocity did not increase as a function of the relative numbers of African Americans in the county population but it did increase as a function of the relative numbers of mob members in the lynch mob. Discussion considers the implications of these results. 相似文献
233.
Autobiographical memory was investigated in a sample of 19 individuals with remitted bipolar affective disorder and a community sample of 16 individuals with remitted unipolar depression who had similar low levels of current symptoms. Each participant was prompted to recall one positive memory and one negative memory, to rate it on several scales, and to describe it in detail. Relative to the remitted unipolar group, the remitted bipolar group reported more general than specific negative memories and more frequent recollections of the negative memory during their everyday life. Across the sample, 95% of all specific memories involved a mental image, whereas only 56% of all general memories involved a mental image, suggesting a role of imagery in the retrieval of a specific memory. Characteristic examples of memories are provided. These results are preliminary yet they suggest that patients with bipolar disorder in remission may show memory characteristics that are often associated with symptomatic unipolar depression. 相似文献
234.
Knight DC Smith CN Cheng DT Stein EA Helmstetter FJ 《Cognitive, affective & behavioral neuroscience》2004,4(3):317-325
Previous functional magnetic resonance imaging (fMRI) studies have characterized brain systems involved in conditional response
acquisition during Pavlovian fear conditioning. However, the functional neuroanatomy underlying the extinction of human conditional
fear remains largely undetermined. The present study used fMRI to examine brain activity during acquisition and extinction
of fear conditioning. During the acquisition phase, participants were either exposed to light (CS) presentations that signaled
a brief electrical stimulation (paired group) or received light presentations that did not serve as a warning signal (control
group). During the extinction phase, half of the paired group subjects continued to receive the same treatment, whereas the
remainder received light alone. Control subjects also received light alone during the extinction phase. Changes in metabolic
activity within the amygdala and hippocampus support the involvement of these regions in each of the procedural phases of
fear conditioning. Hippocampal activity developed during acquisition of the fear response. Amygdala activity increased whenever
experimental contingencies were altered, suggesting that this region is involved in processing changes in environmental relationships.
The present data show learning-related amygdala and hippocampal activity during human Pavlovian fear conditioning and suggest
that the amygdala is particularly important for forming new associations as relationships between stimuli change. 相似文献
235.
We hypothesized that when individuals with bipolar disorder are engaged in goal-directed behaviour and experience elevated mood, their decision-making becomes less constrained by advice from other people. This process may allow their goal-directed behaviour to persist, contributing to manic symptoms. Three groups of 32 participants: euthymic-bipolar-I, remitted-unipolar and never-depressed healthy controls were allocated to either a high or low mood induction. Advice-taking was assessed before and after the induction by a computerized task incorporating facial images. The bipolar group significantly opposed the advice given in the task after the high mood induction. The effect was specific to bipolar disorder and remained when controlling for possible confounds. Future work could investigate the effects of this process on manic symptoms, its origins, and the wider theoretical and clinical implications. 相似文献
236.
The contribution of defensive coping to the phenomenon of excessive self-focused attention was studied in 20 depressed or anxious psychiatric outpatients comprising the negative affect group, 20 patients with psychotic disorders, and a control group of 21 patients of an orthopaedic clinic. Self-focused attention was assessed using the Self-reflectiveness and Internal State Awareness subfactors of the Private Self-consciousness Scale. In accordance with other research on self-focused attention, the negative affect group obtained higher scores on the Self-reflectiveness scale than the control group (t39=2.40, p<.03). To examine the relationship between self-focus and defensiveness, Weinberger, Schwartz, and Davidson's approach was employed, using median splits of short forms of the Taylor Manifest Anxiety Scale and the Marlowe-Crowne scale to differentiate among four groups of subjects. The highest self-reflectiveness was found for those participants who were high in both defensiveness and anxiety. This group scored higher than the nondefensive high anxious group (t30= -2.31, p<.03). The heightened self-focused attention might result from automatically instigated states of self-focused attention and paradoxical effects of defensive efforts to avoid self-focus. 相似文献
237.
The psychometric properties of the Rosenberg Self-Esteem Scale (RSES) as a clinical research instrument for acute coronary syndrome (ACS) patients were investigated in a translated Chinese version of the instrument. A confirmatory factor analysis was conducted on the RSES to establish its psychometric properties in 128 ACS patients over two observation points (within 1 week and 6 months post-admission for ACS). Internal and test-retest reliability of the RSES-TOT (all-items) and RSES-POS sub-scale (positively valenced items) were found to be acceptable. The RSES-NEG sub-scale (negatively valenced items) lacked acceptable internal reliability. The underlying factor structure of the RSES comprised two distinct but related factors, though there was inconsistency in best model fit indices at the 1-week observation point. The use of the RSES as two sub-scales (RSES-POS and RSES-NEG) may be clinically useful in evaluating the influence of this important psychological construct on the health outcomes of patients with ACS. Directions for future research are indicated. 相似文献
238.
Induced mood change and dysfunctional attitudes in remitted bipolar I affective disorder 总被引:4,自引:0,他引:4
This study investigated the possibility that, in remitted bipolar I affective disorder, dysfunctional attitudes are mood-state dependent. Participants were 120 individuals with remitted bipolar I disorder, remitted unipolar depression, or no history of affective disorder. The Dysfunctional Attitudes Scale (DAS; Weissman, 1979) was completed before and after positive or negative mood challenge. Following mood increase, the bipolar group changed significantly less in DAS total score than did the other 2 groups, and in goal-striving and achievement attitudes relative to the unipolar group. These findings did not provide clear support for the mood-state dependency theory in bipolar disorder, arguing instead for the presence in bipolar I disorder of dysfunctional cognitions that show characteristic resilience in the face of minor positive mood increase. 相似文献
239.
In the present experiment, the authors examined whether trait anger was associated with cognitive biases for anger-related semantic stimuli. Fifty-two undergraduate students completed the Trait Anger Scale (TAS; C. D. Spielberger, G. Jacobs, S. Russell, & R. Crane, 1983), and those reporting TAS scores in the upper (n = 17) or lower (n = 13) quartiles of the sample were assigned to high- and low-anger groups, respectively. The 30 participants then engaged in a lexical decision task that presented various emotion words, neutral words, and nonwords. Results indicated that individuals who reported high levels of trait anger displayed facilitative biases in the processing of semantic anger-related stimuli. This predisposition to more readily process anger-related information may underlie their propensity to experience intense feelings of anger when provoked. 相似文献
240.
Tracie L. Stewart R. Toby Amoss Brittany A. Weiner Lisa A. Elliott Dominic J. Parrott Chloe M. Peacock 《Basic and applied social psychology》2013,35(5):418-425
We introduced facial electromyography as a tool for predicting advantaged group members' engagement in antidiscrimination action on behalf of a disadvantaged outgroup. Heterosexual men's corrugator supercilii (brow “frowning” muscles) activity while viewing videos of male–male and male–female couples interacting was measured. Corrugator (negative affect) response to male–male versus male–female targets, but not self-reported attitudes toward gay men, predicted number of flyers calling for action to reduce antigay violence and discrimination that participants privately took to distribute. Our discreet behavioral measure mirrored real-life collective action possibilities such as voting against laws prohibiting same-sex marriage in the privacy of one's voting booth. 相似文献