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31.
    
ABSTRACT. Motor disorders may occur in mild cognitive impairment (MCI) and at early stages of Alzheimer's disease (AD), particularly under divided attention conditions. We examined functional mobility in 104 older adults (42 with MCI, 26 with mild AD, and 36 cognitively healthy) using the Timed Up and Go test (TUG) under 4 experimental conditions: TUG single task, TUG plus a cognitive task, TUG plus a manual task, and TUG plus a cognitive and a manual task. Statistically significant differences in mean time of execution were found in all four experimental conditions when comparing MCI and controls (p < .001), and when comparing MCI and AD patients (p < .05). Receiver-operating characteristic curve analyses showed that all four testing conditions could differentiate the three groups (area under the curve > .8, p < .001 for MCI vs. controls; area under the curve > .7, p < .001 for MCI vs. AD). The authors conclude that functional motor deficits occurring in MCI can be assessed by the TUG test, in single or dual task modality.  相似文献   
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This article examines the effectiveness of a newly introduced integrative structure and its impact on employee job perceptions in an aircraft maintenance organization. It is not common to find studies, that relate such changes to lower level employee reactions. The implementation of the change programme involved a system-wide approach incorporating both structural and cultural change. Using a retrospective methodology we assessed employee reactions to the changes introduced. We found that both intrinsic job satisfaction and job characteristics perceptions improved in the new integrative organization. The fact that positive findings have been identified when other studies found no relationship between such changes and attitudinal outcomes illustrates the efficacy of a system-wide approach to change. Extrinsic satisfaction and organizational commitment however did not improve. This can perhaps be explained by the fact that the latter areas are concerned with factors outside the direct completion of the job and may take much longer to change if indeed they can be shown to change over time at all.  相似文献   
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Scope of review: The paper reports a meta‐synthesis of 13 qualitative studies of counselling and psychotherapy with people at risk of suicide. Publication time span: The studies considered were reported between 1997 and 2006. Publication origin: Seven studies were conducted in the UK, four in the USA, one in Canada, and one in Sweden. Findings: Themes in clients' and therapists' accounts of the process of counselling or psychotherapy were therapist qualities; therapy components; theoretical framework; and therapy techniques. Themes in their accounts of the effectiveness of counselling and psychotherapy were decrease in self‐destructive behaviour, and quality of life. Themes in clients' views of barriers to effective counselling or psychotherapy were therapist characteristics; therapy components; secrecy; and transferring to the real‐life situation. Secrecy was also identified as a barrier by therapists, as were responsibilities of the profession; training; and the nature of suicide and self‐harm. Facilitators of successful counselling and psychotherapy as identified by clients were responsibility; support; and teaching therapy skills to family members, the latter also being identified by therapists.  相似文献   
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The purpose of this article is to propose and test a model of extrarole customer service (ERCS). We propose that organizational justice (distributive, procedural, interpersonal, and informational) promotes well-being at work (low burnout and high engagement). Well-being at work, in turn, engenders more effective ERCS. Thus, well-being at work is considered a mediator of the relationships from organizational justice to ERCS. This fully mediated model was compared to an alternative fully direct model. The sample consisted of 317 contact employees who were working in the Spanish service sector. The results of structural equation modelling supported the importance of the mediating role of the positive side of well-being at work (engagement) in the relationship between organizational justice and ERCS. The article concludes with a discussion of the theoretical and managerial implications.  相似文献   
36.
Matched samples of depressed and nondepressed cancer patients were interviewed about past life events, particularly experiences of death and illness. They identified and described any spontaneous intrusive visual memories they had experienced in the past week corresponding to these events. About one quarter reported such memories and, as predicted, the majority of intrusive memories concerned illness, injury and death. The mean levels of intrusion and avoidance were equivalent to patients with post-traumatic stress disorder. Consistent with prediction, depressed patients reported significantly more intrusive memories than controls, and described the memories as typically beginning with or being exacerbated by the onset of depression. Greater numbers of intrusive memories were associated with more maladaptive coping, and greater avoidance with deficits in autobiographical memory functioning.  相似文献   
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In three experiments we measured reaction times (RTs) and error rates in identifying the global structure of spatially filtered stimuli whose spatial-frequency content was selected by means of three types of 2-D isotropic filters (Butterworth of order 2, Butterworth of order 10, and a filters with total or partial Gaussian spectral profile). In each experiment, low-pass (LP), bandpass (BP), and high-pass (HP) filtered stimuli, with nine centre or cut-off spatial frequencies, were used. Irrespective of the type of filter, the experimental results showed that: (a) RTs to stimuli with low spatial frequencies were shorter than those to stimuli with medium or high spatial frequencies, (b) RTs to LP filtered stimuli were nearly constant, but they increased in a nonmonotonic way with the filter centre spatial frequency in BP filtered stimuli and with the filter cut-off frequency in HP filtered stimuli, and (c) the identification of the global pattern occurred with all visible stimuli used, including BP and HP images without low spatial frequencies. To remove the possible influence of the energy, a fourth experiment was conducted with Gaussian filtered stimuli of equal contrast power (c(rms) = 0.065). Similar results to those described above were found for stimuli with spatial-frequency content higher than 2 cycles deg(-1). A model of isotropic first-order visual channels collecting the stimulus spectral energy in all orientations explains the RT data. A subsequent second-order nonlinear amplitude demodulation process, applied to the output of the most energetic first-order channel, could explain the perception of global structure of each spatially filtered stimulus, including images lacking low spatial frequencies.  相似文献   
38.
Barrada JR  Olea J  Ponsoda V  Abad FJ 《Psicothema》2006,18(4):828-834
Item selection rules in a Computerized Adaptive Test for the assessment of written English. e-CAT is a Computerized Adaptive Test for the evaluation of written English knowledge, using the item selection rule most commonly employed: the maximum Fisher information criterion. Some of the problems of this criterion have a negative impact in the estimation accuracy and in the item bank security. In this study, the performance of this item selection rule is compared, by means of simulation, with two other rules: selecting the item with maximum Fisher information in an interval (Veerkamp y Berger, 1997) and a new criterion, called "maximum Fisher information in an interval with geometric mean". In general, this new rule shows smaller measurement error and smaller item overlap rates. It seems, thus, recommendable, as it allows the simultaneous improvement of estimation accuracy and the maintenance of the item bank security of e-CAT.  相似文献   
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The present study evaluates the extent to which central categories explicitly labeled as being in the middle of the other response categories, specifically Middle Level and Sometimes, function as expected according to the integer scoring system. The assumptions are tested by means of Bock's Nominal Model in two 5-response scales. Results show that the assumption of the ordering of the response categories is met for all the items. The ordering of thresholds is satisfied for all but one item with the central category Middle Level . Results are compared with those obtained when middle categories are not explicitly labeled as being in the middle of the other response categories, as in the case of Not Sure , Undecided or?  相似文献   
40.
Applied Research in Quality of Life - This research study tested an intervention, based on autonomous teams and the service co-creation approach, to improve the social inclusion and...  相似文献   
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