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151.
In the explicit cuing version of the task-switching paradigm, each individual task is indicated by a unique task cue. Consequently,
a task switch is accompanied by a cue switch. Recently, it has been proposed that priming of cue encoding contributes to the
empirically observed switch costs. This proposal was experimentally supported by using a 2:1 mapping of cues to tasks, so
that a cue switch does not necessarily imply a task switch. The results indeed suggested a substantial contribution of “cue-switch
costs” to task-switch costs. Here we argue that the 2:1 mapping potentially leads to an underestimation of “pure” task-switch
costs. To support this argument, we report the results of a new study in which we used “transition cues” that indicate the
identity of the current task based on the identity of the preceding task. This new type of cue allows a full factorial manipulation
of cue switches and task switches because it includes the condition in which a cue repetition can also indicate a task switch
(i.e., when the “switch” cue is repeated). We discuss the methodological implications and argue that the present approach
has merits relative to the previously used 2:1 mapping of cues to tasks. 相似文献
152.
Forensic evaluations of offender populations often consider psychopathy as an integral component of these consultations. Vexing issues remain of whether psychopathic traits should be evaluated consistently irrespective of demographic characteristics (e.g. gender), comorbidity (e.g. other Axis II pathology), or setting (e.g. jail or community). The current study examined gender differences for psychopathy and Axis II traits in a nonreferred jail sample of predominantly nonviolent offenders. Participants with moderate to high levels of psychopathy evidenced substantial comorbidity, especially with Cluster B personality disorders. Facets of psychopathy and Axis II traits varied substantially across both genders. In addition, the research evaluated Lynam's Hyperactivity, Impulsivity, and Attention difficulties (HIA) model of psychopathy. These initial data found little support for the HIA model in this jail sample. In testing competing hypotheses, the HIA model was substantially better at predicting Cluster B traits than psychopathy per se. 相似文献
153.
Ethical guidelines require school psychologists to ensure that their assessment practices are nondiscriminatory, but typical discussions on this topic neglect the possible discriminatory effects of cultural stereotypes on assessment results. Recent research on stereotype threat shows that students' knowledge of stereotype-based negative expectations about their test performance can depress their actual test performance. This paper discusses the range of conditions that promote stereotype threat and identifies important moderators and mediators of the phenomenon. Several practical suggestions are offered for school psychologists to consider when interviewing students, interpreting assessment results, and developing programs to increase schoolwide achievement. 相似文献
154.
Coping with challenge and hindrance stressors in teams: Behavioral,cognitive, and affective outcomes
Matthew J. Pearsall Aleksander P.J. Ellis Jordan H. Stein 《Organizational behavior and human decision processes》2009
The purpose of this study was to utilize the challenge–hindrance framework to examine the discrete and combined effects of different environmental stressors on behavioral, cognitive, and affective outcomes at the team level. Results from 83 teams working on a command and control simulation indicated that the introduction of a challenge stressor positively affected team performance and transactive memory. The introduction of a hindrance stressor negatively affected team performance and transactive memory and positively affected psychological withdrawal. When the hindrance stressor was combined with the challenge stressor, teams exhibited the lowest levels of performance and transactive memory, and the highest levels of psychological withdrawal. These effects were due to the adoption of specific coping strategies by team members. Implications are discussed, as well as limitations and directions for future research. 相似文献
155.
Research and theory distinguish two types of attitude: automatic evaluative reactions and deliberate evaluative judgments, referred to as implicit and explicit attitudes, respectively. Although these attitudes are distinct, they may influence each other. Four studies tested whether implicit and explicit attitudes are both influenced by propositional and associative learning. We also tested whether changes in one kind of attitude mediate changes in the other. Study 1 found that propositional learning about novel individuals directly influenced explicit attitudes and indirectly influenced implicit attitudes through changes in explicit attitudes. Studies 2 and 3 replicated this finding and extended it by simultaneously demonstrating that associative learning through Evaluative Conditioning directly influences implicit attitudes and indirectly influences explicit attitudes through changes in implicit attitudes. Study 4 replicated these effects for attitudes toward familiar, rather than novel, targets. These results suggest that implicit and explicit attitudes can share common antecedents and influence each other. 相似文献
156.
Stefanie Kehrer Antje Kraft Kerstin Irlbacher Stefan P. Koch Herbert Hagendorf Norbert Kathmann Stephan A. Brandt 《Psychological research》2009,73(6):751-761
Event-related potentials were measured to investigate the role of visual spatial attention mechanisms in conflict processing.
We suggested that a more difficult target selection leads to stronger attentional top-down control, thereby reducing the effects
of arising conflicts. This hypothesis was tested by varying the selection difficulty in a location negative priming (NP) paradigm.
The difficult task resulted in prolonged responses as compared to the easy task. A behavioral NP effect was only evident in
the easy task. Psychophysiologically the easy task was associated with reduced parietal N1, enhanced frontocentral N2 and
N2pc components and a prolonged P3 latency for the conflict as compared to the control condition. The N2pc effect was also
obvious in the difficult task. Additionally frontocentral N2 amplitudes increased and latencies of N2pc and P3 were delayed
compared to the easy task. The differences at frontocentral and parietal electrodes are consistent with previous studies ascribing
activity in the prefrontal and parietal cortex as the source of top-down attentional control. Thus, we propose that stronger
cognitive control is involved in the difficult task, resulting in a reduced behavioral NP conflict. 相似文献
157.
Richard A. Epstein Neil Jordan Yong Joo Rhee Gary M. McClelland John S. Lyons 《Journal of child and family studies》2009,18(3):303-311
We studied 9,220 children referred to a comprehensive mental health crisis stabilization program to examine the impact of
caregiver capacity on crisis worker decisions to refer children for intensive community-based treatment as opposed to inpatient
psychiatric hospitalization. Due to the different role of caregivers in the child welfare system, analyses were stratified
by state custody status. Among both groups, there was a significant inverse association between child mental health need and
referral to intensive community-based treatment. For children not in state custody with low mental health need, there was
no difference in the likelihood of referral to intensive community-based treatment across levels of caregiver capacity. However,
for children not in state custody with medium and high mental health needs, those whose caregivers were deficient or severely
deficient were significantly more likely to be referred for intensive community-based treatment than were those who had capable
caregivers. Multivariate analyses demonstrated similar results after controlling for potential confounding variables and confirmed
that caregiver capacity contributes significantly to the logistic model’s classification accuracy. Results suggest further
investigation of the impact of caregiver capacity on mental health crisis worker referral decisions is needed. 相似文献
158.
159.
Given the rise in health care costs and the premature morbidity and mortality rates in the United States, the authors discuss the relevant constructs of wellness and holistic health as they relate and apply to the profession of counseling. Implications and application of the Indivisible Self model of wellness (J. E. Myers & T. J. Sweeney 2004) in counseling are highlighted. 相似文献
160.
The study of spatial frequency is being used increasingly often to investigate processes underlying visual word recognition. However, research in this area has adopted techniques that require the physical deformation of word targets used in experiments (e.g., filtered images of words, words embedded in visual noise), and this approach may limit the inferences that can be made about the role of spatial frequencies in normal word recognition. Spatial frequency adaptation is described in this article as an additional technique for studying the role of spatial frequency information in word recognition. The advantage of this technique is that it alters participants' sensitivity to particular spatial frequencies and so allows the study of spatial frequency involvement in word recognition using normal images of word stimuli. The application of the adaptation technique to studies of word recognition is explained in detail and its potential is then demonstrated by an example word recognition experiment in which spatial frequency adaptation was used. 相似文献