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21.
Four experiments were performed to test whether the perceptual priming of face recognition would show invariance to changes in size, position, reflectional orientation (mirror reversal), and picture-plane rotation. In all experiments, subjects recognized faces in two blocks of trials; in the second block, some of the faces were identical to those in the first, and others had undergone metric transformations. The results show that subjects were equally fast to recognize faces whether or not the faces had changed in size, position, or reflectional orientation between the first and second presentations of the faces. In contrast, subjects were slower to recognize both faces and objects when they were planar-rotated between the first and second presentations. The results suggest that the same metric invariances are shown by both face recognition and basic-level object recognition. 相似文献
22.
A replication of Rorschach and MMPI-2 convergent validity 总被引:1,自引:0,他引:1
Meyer GJ Riethmiller RJ Brooks RD Benoit WA Handler L 《Journal of personality assessment》2000,74(2):175-215
We replicated prior research on Rorschach and MMPI-2 convergent validity by testing 8 hypotheses in a new sample of patients. We also extended prior research by developing criteria to include more patients and by applying the same procedures to 2 self-report tests: the MMPI-2 and the MCMI-II. Results supported our hypotheses and paralleled the prior findings. Furthermore, 3 different tests for methodological artifacts could not account for the results. Thus, the convergence of Rorschach and MMPI-2 constructs seems to be partially a function of how patients interact with the tests. When patients approach each test with a similar style, conceptually aligned constructs tend to correlate. Although this result is less robust, when patients approach each test in an opposing manner, conceptually aligned constructs tend to be negatively correlated. When test interaction styles are ignored, MMPI-2 and Rorschach constructs tend to be uncorrelated, unless a sample just happens to possess a correlation between Rorschach and MMPI-2 stylistic variables. Remaining ambiguities and suggestions for further advances are discussed. 相似文献
23.
Two experiments investigated differences between active and passive participation in a computer-generated virtual environment in terms of spatial memory, object memory, and object location memory. It was found that active participants, who controlled their movements in the virtual environment using a joystick, recalled the spatial layout of the virtual environment better than passive participants, who merely watched the active participants' progress. Conversely, there were no significant differences between the active and passive participants' recall or recognition of the virtual objects, nor in their recall of the correct locations of objects in the virtual environment. These findings are discussed in terms of subject-performed task research and the specificity of memory enhancement in virtual environments. 相似文献
24.
This review examines the effect of background stressors with acute stressor reactivity and recovery in the 19 available studies. Background stressors were associated with increased acute stressor reactivity in slightly over half of the studies of ongoing stressors. However, a substantial minority of studies demonstrated reduced acute stressor reactivity, suggesting habituation for certain people in certain situations. Background stressors were associated with delayed blood-pressure and immunological recovery from acute stressor events, but were not associated with delayed heart-rate recovery. Possible mechanisms underlying the association between background stressors and acute stressor reactivity and recovery are discussed. Background stressors should be measured thoroughly in future acute stress research to understand the meaning of the acute stress responses. 相似文献
25.
Hartley AA Maquestiaux F Brooks RD Festini SB Frazier K 《Cognitive, affective & behavioral neuroscience》2012,12(3):543-556
There is a response selection bottleneck that is responsible for dual-task interference. How the response selection bottleneck operates was addressed in three dual-task experiments. The overlap between two tasks (as indexed by the stimulus onset asynchrony [SOA]) was systematically manipulated, and both reaction time and electrodermal activity were measured. In addition, each experiment also manipulated some aspect of the difficulty of either task. Both increasing task overlap by reducing SOA and increasing the difficulty of either task lengthened reaction times. Electrodermal response was strongly affected by task difficulty but was only weakly affected by SOA, and in a different manner from reaction time. A fourth experiment found that the subjectively perceived difficulty of a dual-task trial was affected both by task difficulty and by SOA, but in different ways than electrodermal activity. Overall, the results were not consistent with a response selection bottleneck that involves processes of voluntary, executive attention. Instead, the results converge with findings from neural network modeling to suggest that the delay of one task while another is being processed reflects the operation of a routing mechanism that can process only one stream of information for action at a time and of a passive, structural store that temporarily holds information for the delayed task. The results suggest that conventional blocked or event-related neuroimaging designs may be inadequate to identify the mechanism of operation of the response selection bottleneck. 相似文献
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27.
Suarez LM Belcher HM Briggs EC Titus JC 《American journal of community psychology》2012,49(3-4):430-440
Adolescents are at high risk for violence exposure and initiation of drug use. Co-occurring substance use and trauma exposure are associated with increased risk of mental health disorders, school underachievement, and involvement with multiple systems of care. Coordination and integration of systems of care are of utmost importance for these vulnerable youth. This study delineates the negative sequelae and increased service utilization patterns of adolescents with a history of trauma, substance abuse, and co-occurring trauma and substance abuse to support the need for integrated mental health and substance abuse services for youth. Data from two national sources, the National Child Traumatic Stress Network and Center for Substance Abuse Treatment demonstrate the increased clinical severity (measured by reports of emotional and behavioral problems), dysfunction, and service utilization patterns for youth with co-occurring trauma exposure and substance abuse. We conclude with recommendations for an integrated system of care that includes trauma-informed mental health treatment and substance abuse services aimed at reducing the morbidity and relapse probability of this high-risk group. 相似文献
28.
Motion perception involves the processing of velocity signals through several hierarchical stages of the visual cortex. To better understand this process, a number of studies have sought to localise the neural substrates of two misperceptions of motion direction, the direction illusion (DI) and the direction aftereffect (DAE). These studies have produced contradictory evidence as to the hierarchical order of the processing stages from which the respective phenomena arise. We have used a simple stimulus configuration to further investigate the sequential order of processes giving rise to the DI and DAE. To this end, we measured the two phenomena invoked in combination, and also manually parsed this combined effect into its two constituents by measuring the two phenomena individually in both possible sequential orders. Comparing the predictions made from each order to the outcome from the combined effect allowed us to test the tenability of two models: the DAE-first model and the DI-first model. Our results indicate that DAE-invoking activity does not occur earlier in the motion processing hierarchy than DI-invoking activity. Although the DI-first model is not inconsistent with our data, the possible involvement of non-sequential processing may be better able to reconcile these results with those of previous studies. 相似文献
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30.
Thom Brooks 《Journal of Global Ethics》2014,10(2):156-166
David Miller's theory of nationalism and national responsibility offers the leading alternative ‘anticosmopolitan’ theory of global justice. His theory claims that ‘nations’ may be held responsible for the benefits and harms resulting from their collective decisions. Nations may be held remedially responsible to help nations in need even where the former lack causal or moral responsibility, for example. This article critically examines Miller's position that remedial responsibilities – the responsibilities of nations to remedy others in need – can and should only be satisfied by nations. I argue that the characteristics that define and justify a particular understanding of nationalism extend to further constructions of identity, such as religious affiliation and other connections. The problem with Miller's position is that it is overly narrow by focusing solely on our national identities as the characteristic most relevant for determining remedial responsibilities. It is possible and desirable to widen our focus, enriching our understanding of global justice and remedial responsibility. Moreover, this wider perspective is an extension, and not a break from, Miller's position. Our shared identities should have significance for considerations of global justice and they can help us to develop a more robust view of anticosmopolitanism. 相似文献