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61.
Recent findings (Beilock & Carr, 2005) have demonstrated that only individuals with a high working memory capacity (WMC) “choke
under pressure” on math problems with high working memory demands. This suggests that performance pressure hinders those who
are the most qualified to succeed, because it consumes the WMC they usually rely on to achieve superior performance. This
puts into question the use of performance in high-pressure situations as a means of distinguishing individuals with lesser
or greater WMC potentials. While addressing several limitations of past research, we offer evidence that such choking (1)
occurs only in individuals with high WMC, because of their anxiety-ridden perceptions of high-stakes situations, and (2) is
not confined to tasks involving acquired skills and knowledge, but encompasses fluid reasoning abilities or intelligence (Gf).
These findings have strong implications for assessments of people’s intellectual capacities in academic, clinical, work, and
research settings. 相似文献
62.
Turning biases in humans and animals are known to be related to dopaminergic asymmetry between the brain hemispheres. A laboratory method, in which turning preference was evaluated, was adapted based upon the turning of the subject toward a particular sound in a square room. One of the aims of this study was to investigate the reliability of this method with children, and the other aim was to research the turning preference in boys and girls. 31 children between 7 and 13 yr. old volunteered as subjects, and 17 subjects were retested. The subjects tended significantly to turn leftward (60.1%), and fewer girls (53.7%) turned to the left than boys (66.2%). The correlation between the test and the retest was significant (r=.79, p< .01). Most studies have indicated that humans in childhood and adulthood exhibit left-turning preference, but conflicts between the results obtained on different types of rotation tasks have suggested that hemispheric dopaminergic activity might affect preference. That needs study. 相似文献
63.
The aim of the current study was to investigate the validity and reliability of goal orientation and self-efficacy scales. The scales were administered to 264 university students (154 from engineering departments, 110 from business administration). Two samples were used. In the first sample, the original factor model was tested with confirmatory factor analysis. In the second sample, the Turkish versions of the scales were factor analyzed. Principal components analysis resulted in three components for the Goal Orientation scale: Learning goal orientation, Performance-prove goal orientation, and Performance-avoid goal orientation. The Self-efficacy scale had one factor as expected. Cronbach's alpha coefficients were satisfactory. The results did not fully support the use of current Turkish versions of the scales. Results of the studies are discussed along with the strengths and limitations of the study and suggestions for further development of the scales. 相似文献
64.
Yildirim NU Erbahçeci F Ergun N Pitetti KH Beets MW 《Perceptual and motor skills》2010,111(1):178-186
The purpose of this study was to assess whether reaction time in persons with intellectual disabilities can be improved with an exercise program. 50 children and adolescents (M age = 14.7 yr., SD = 1.4, range = 11-18) with mild intellectual disability without Downs syndrome were randomly divided into control (20 boys, 5 girls) and experimental (19 boys, 6 girls) groups. The experimental group participated in a structured physical fitness program for 12 weeks. Reaction time was assessed at baseline and after 12 weeks. Significant improvements in reaction time were observed in the exercise group but not for the control group. Results indicated that reaction time can be improved with an exercise program in youth with intellectual disability. 相似文献
65.
The aim of this study is to determine the attitudes and behaviors of religious scholars regarding organ donation and transplantation. In this study, 540 officials working in the Department of Religious Affairs in Kayseri, Turkey, were included. Overall, 86.6% response rate (n = 468) was achieved. Although a majority of the officials of religion in this study stated that they believed in the importance of organ donation (90.8%), the rate of considering donation (57.9%) and the donation rate (1.1%) were found to be substantially low. There is a difference between the employment status and willingness to donate organs. The rate of willingness to donate was significantly high in men than women. And also was high in imams and preachers. Regarding the sources of information, the majority of the respondents (70.0%) cited mass media. Overall, 15.3% cited school education and 42.0% religious publications. The most common question (83.1%) that was asked was “whether or not organ donation was suitable for Muslim religious”. Our study revealed that although the research groups have positive ideas about organ donation and transplantation, their role was low in informing and motivating people about organ donation and transplantation. 相似文献
66.
Dispositional reasoning is defined as general reasoning about traits, behaviors, and situations. Although earlier accuracy studies found that it predicted interview judgment accuracy, they did not distinguish between its underlying components (i.e., trait induction, trait extrapolation, and trait contextualization). This drawback has hampered insight into the nature of the dispositional reasoning construct. Therefore, we use a componential approach to test if dispositional reasoning adheres to classical criteria for an intelligence. Results from 146 managerial interviewers who observed videotaped interviewees showed that the dispositional reasoning components had positive manifold and predicted interview accuracy. Moreover, they demonstrated discriminant validity with personality and incremental validity over cognitive ability in predicting interview accuracy. Together, findings suggest that dispositional reasoning broadly adheres to the classical criteria for an intelligence. 相似文献
67.
68.
Parietal cortical areas are involved in sensori-motor transformations for their respective contralateral hemifield/body. When arms of the subjects are crossed while their gaze is fixed straight ahead, vision of the hand is processed by the hemisphere ipsilateral to the arm position and proprioception of the arm by the contralateral hemisphere. It induces interhemispheric transfer and remapping. Our objective was to investigate whether a single pulse TMS applied to the left parietal cortical area would disturb interhemispheric remapping in a similar case, and would increase a simple reaction time (RT) with respect to a control single pulse TMS applied to the frontal cortical area. Two LED were superimposed and located in front of the subjects on the saggital axis. Subjects were asked to carefully fixate on these LED during each trial. The lighting of the red LED was used as a warning signal. Following the green one was illuminated after a variable delay and served as a go-signal. The hand for the response was determined before the start of each trial. TMS was applied to the left parietal, the left frontal cortical areas, or not applied to the subject. Results revealed that: (1) Irrespective of its location, single pulse TMS induced a non-specific effect similar to a startle reflex and reduced RT substantially (15 ms on average) with respect to a control condition without TMS (mean value = 153 ms). (2) Irrespective of TMS, RT were shorter when the right or the left hand was positioned in the right visual hemi-field (i.e. normal and crossed positions respectively). (3) Finally, RT increased when single pulse TMS was applied to the left parietal area and when hands were crossed irrespective of which hand was used. We concluded that interhemispheric sensori-motor remapping was disrupted by a single pulse TMS that was applied to the left parietal cortex. This effect was also combined with some visual attention directed towards the hand located on the right visual hemi-field. 相似文献
69.
Fernando Jaramillo François A. Carrillat William B. Locander 《Journal of Personal Selling & Sales Management》2013,33(4):369-377
The performance effect is used to explain the significant differences between salespersons’ self-evaluation and supervisors’ ratings of job performance. It is shown that bottom performers overestimate, whereas top salespeople underestimate their performance. Also, results indicate that bottom performers are significantly more inaccurate than top salespeople in their job performance estimation. Finally, results indicate that the relationship between inaccuracy of self-evaluation and job performance is curvilinear. Managerial implications are provided as well as directions for future research and limitations. 相似文献
70.
Savaş Sönmezoğlu Yakup Ulusu Fatma Gedikli Özlem Ateş Sönmezoğlu İsa Gökçe 《Philosophical Magazine Letters》2013,93(5):211-216
We have fabricated a molecular organic light-emitting device comprising indium–tin oxide/a molecular organic layer/aluminum in which the organic layer is a green fluorescent protein. The device exhibits peak external quantum and power efficiencies of 8?±?0.2% and 13?±?0.7?lm?W???1 at a current of J?=?1.5?A?m?2, respectively. In addition, the turn-on voltage is 2.5?V for 1?cd?m?2 and the maximum luminance achieved is 1275?cd?m?2. This good performance can be explained by the presence of singlet-excited states, leading to a high internal efficiency. 相似文献