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111.
This study investigates the effects of negative affect on performance monitoring. EEG was acquired during a lateralized, numeric
Stroop working memory task that featured task-irrelevant aversive and neutral pictures between stimuli. Performance accuracy
showed a right-hemisphere advantage for stimuli that followed aversive pictures. Response-locked event-related potentials
(ERPs) from accurate trials showed an early negative component (CRN; correct response/conflict-related negativity) followed
by a positive wave comparable to the Pe (error positivity). The CRN was bi-peaked with an earlier peak that was sensitive
to aversive pictures during early portions of the experiment and a later peak that increased with error likelihood later in
the experiment. Pe amplitude was increased with aversive pictures early in the experiment and was sensitive to picture type,
Stroop interference, and hemisphere of stimulus delivery during later trials. This suggests that ERP indices of performance
monitoring, the CRN and Pe, are dynamically modulated by both affective and cognitive demands. 相似文献
112.
The most pervasive and least well-addressed problem in cognitive studies of schizophrenia is the propensity of schizophrenia patients to show inferior performance on a variety of cognitive tasks. Consequently, apparent specific cognitive abnormalities may actually reflect the interaction of task discriminating power with generalized deficit. L. J. Chapman and J. P. Chapman (1973a) suggested psychometric approaches for eliminating such artifactual group differences. Unfortunately, their solution neglects important issues of process specification and does not provide a viable strategy for process-oriented investigators. Psychometric remediation of artifactual Group x Task interactions inevitably confounds the processes being measured, resulting in theoretically ambiguous findings. Moreover, evidence that changes in measurement reliability can both increase and decrease group discrimination challenges a basic underlying assumption of the Chapmans' matching solution. This article presents a process-oriented approach to solving this problem in schizophrenia research. 相似文献
113.
Liddy B. Hope Katherine A. Milewski-Hertlein April Rodriguez 《Contemporary Family Therapy》2001,23(1):33-49
This paper examines both positive and negative influences of political correctness on family therapy. The authors contend the political correctness movement has limited assessment and joining in the therapy room. Impact on self-of-the therapist is considered. Strategies for combating the political correctness movement are discussed. 相似文献
114.
Machado L Wyatt N Devine A Knight B 《Journal of experimental psychology. Human perception and performance》2007,33(5):1045-1061
Humans have a remarkable capability to respond efficiently to a stimulus of interest despite other stimuli competing for neural resources. The current study investigated how the human system copes with distracting stimuli. During each trial, participants viewed 2 sequential stimuli that were each associated with a specific action based on an arbitrary mapping. The 1st stimulus served as a distractor, and the 2nd stimulus required a response (target). When the distractor preceded the target by more than a few hundred milliseconds, response latencies were slower when the 2 stimuli were associated with the same response. The authors propose that this negative compatibility effect stemmed from an inhibitory mechanism that the human system utilizes to prevent the distractor from eliciting an unwanted response. 相似文献
115.
The role of familism in stress and coping processes among African American and White dementia caregivers: effects on mental and physical health. 总被引:1,自引:0,他引:1
OBJECTIVE: To explore how familism, burden, and coping styles mediate the relationships between ethnicity and the mental and physical health of caregivers. DESIGN: A probability sample of 65 White and 95 African Americans respondents caring for an older family member with dementia was used to test hypotheses from a sociocultural stress and coping model using path analysis. MAIN OUTCOME MEASURES: Measures of caregivers' health included subjective health, self-reported diseases, blood pressure, and heart rate. Mental health measures included self-reported depression and psychological symptoms. RESULTS: Contrary to the hypothesis, familism had an adverse effect on outcomes and was related to low education levels rather than to African American ethnicity. A buffering effect of active coping between being African American and diastolic blood pressure was found even after controlling for levels of education. CONCLUSIONS: Findings supported a core stress and coping model in which more behavior problems of care recipients were associated with poorer mental health of caregivers via greater burden and more use of avoidant coping. Results also demonstrate that this core model can be extended to physical health. 相似文献
116.
117.
April L. Morgan 《The Journal of religious ethics》2010,38(3):545-578
Analyses of religious and cultural perspectives on the use of force continue to receive criticism for questionable motives, for insufficient holism, and for exaggerating uniqueness. Claims of recurrent problems educe consideration of interdisciplinary proposals designed to resolve related challenges. Thought together, some suggest that a transversal research program into ethical orientations toward war can facilitate fair and rigorous exploration of crosscultural similarities and differences. Tentative findings emphasizing textual precepts indicate some resonance amid diversity across eleven ethical frameworks including Western just war thinking. Maximizing relevance depends upon expanding the range of orientations and practices studied. Future results might be integrated with knowledge about the influence of other variables to more completely capture the phenomenon of making judgments regarding the use of force in all its manifestations. 相似文献
118.
The tactile surface forms a continuous sheet covering the body. And yet, the perceived distance between two touches varies across stimulation sites. Perceived tactile distance is larger when stimuli cross over the wrist, compared to when both fall on either the hand or the forearm. This effect could reflect a categorical distortion of tactile space across body-part boundaries (in which stimuli crossing the wrist boundary are perceptually elongated) or may simply reflect a localised increased in acuity surrounding anatomical landmarks (in which stimuli near the wrist are perceptually elongated). We tested these two interpretations across two experiments, by comparing a well-documented bias to perceive mediolateral tactile distances across the forearm/hand as larger than proximodistal ones along the forearm/hand at three different sites (hand, wrist, and forearm). According to the ‘categorical’ interpretation, tactile distances should be elongated selectively in the proximodistal axis thus reducing the anisotropy. According to the ‘localised acuity’ interpretation, distances will be perceptually elongated in the vicinity of the wrist regardless of orientation, leading to increased overall size without affecting anisotropy. Consistent with the categorical account, we found a reduction in the magnitude of anisotropy at the wrist, with no evidence of a corresponding localised increase in precision. These findings demonstrate that we reference touch to a representation of the body that is categorically segmented into discrete parts, which consequently influences the perception of tactile distance. 相似文献
119.
Catherine Haslam S. Alexander Haslam Craig Knight Ilka Gleibs Renate Ysseldyk Lauren‐Grace McCloskey 《British journal of psychology (London, England : 1953)》2014,105(1):17-34
Group‐based interventions have been argued to slow the cognitive decline of older people residing in care by building social identification and thereby increasing motivation and engagement. The present study explored the identity–cognition association further by investigating the impact of a group decision‐making intervention on cognition. Thirty‐six care home residents were assigned to one of three conditions: an Intervention in which they made decisions about lounge refurbishment as a group, a Comparison condition in which staff made these decisions, or a no‐treatment Control. Cognitive function, social identification, home satisfaction, and lounge use were measured before and after the intervention. Participants in the Intervention condition showed significant increases on all measures, and greater improvement than participants in both Comparison and Control conditions. Consistent with social identity theorizing, these findings point to the role of group activity and social identification in promoting cognitive integrity and well‐being among care residents. 相似文献
120.
Nathaniel Thom Justin Knight Rod Dishman Dean Sabatinelli Douglas C. Johnson Brett Clementz 《Cognitive, affective & behavioral neuroscience》2014,14(2):849-860
Emotional faces and scenes carry a wealth of overlapping and distinct perceptual information. Despite widespread use in the investigation of emotional perception, expressive face and evocative scene stimuli are rarely assessed in the same experiment. Here, we evaluated self-reports of arousal and pleasantness, as well as early and late event-related potentials (e.g., N170, early posterior negativity [EPN], late positive potential [LPP]) as subjects viewed neutral and emotional faces and scenes, including contents representing anger, fear, and joy. Results demonstrate that emotional scenes were rated as more evocative than emotional faces, as only scenes produced elevated self-reports of arousal. In addition, viewing scenes resulted in more extreme ratings of pleasantness (and unpleasantness) than did faces. EEG results indicate that both expressive faces and emotional scenes evoke enhanced negativity in the N170 component, while the EPN and LPP components show significantly enhanced modulation only by scene, relative to face stimuli. These data suggest that viewing emotional scenes results in a more pronounced emotional experience that is associated with reliable modulation of visual event-related potentials that are implicated in emotional circuits in the brain. 相似文献