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41.
Mor N Zinbarg RE Craske MG Mineka S Uliaszek A Rose R Griffith JW Waters AM 《Journal of personality assessment》2008,90(1):66-75
We examined the factor structure of the Neuroticism scale of the Eysenck Personality Questionnaire (EPQ-R-N; S. B. G. Eysenck, Eysenck & Barrett, 1985) and its factor invariance across sex and racial/ethnic groups in a sample of 1,979 adolescents. Using confirmatory factor analyses, we compared a hierarchical model to previous models of the EPQ-R-N and to single-factor and 3-factor structures. The hierarchical factor structure in which a general factor coexists with 3 group factors (depression, social concerns, and worry) was superior to alternative models. The general factor accounted for more than 60% of the variance in EPQ-R-N total scores and was invariant across sex and ethnicity. The 3 group factors varied across ethnicity and sex. We discuss the implications of these findings for conceptualization and assessment of neuroticism using the EPQ-R-N. 相似文献
42.
Actin polymerization is involved in key neuronal functions such as intracellular trafficking and morphogenesis. In this study, we examined the role of actin polymerization in lateral amygdala (LA) in fear conditioning memory formation. Microinfusion of cytochalasin D, an actin polymerization inhibitor, into rat LA immediately before fear conditioning training impaired the formation of long-term fear memory (LTM) but not short-term fear memory (STM). Microinfusion of cytochalasin D into rat LA immediately after fear conditioning impaired LTM. Cytochalasin D had no effect on fear conditioning memory retrieval when injected immediately before LTM test. These results show that actin cytoskeleton rearrangement is essential for fear memory consolidation. 相似文献
43.
The aim of the present study was to examine the effect of fatigue (physiological, mechanical, and muscular parameters) induced by a sprint simulation on kinematic parameters (cycle, phases, and joints angles) of the double pole technique. Eight elite skiers were tested for knee extensor strength and upper body power both before and after a three-bout simulation of sprint racing. They were video analyzed during the final part of the test track of bouts 1 and 3 using a digital camera. Results showed that skiers were in a fatigue state (decrease of the knee extensors voluntary force (-10.4+/-10.4%) and upper body power output (-11.1+/-8.7%) at the end of the sprint. During bout 3, the final spurt and cycle velocities decreased significantly (-7.5+/-12.3%; -13.2+/-9.5%; both p<.05). Angular patterns were only slightly modified between bouts 1 and 3 with trunk, hip, and pole angles being significantly greater for the third bout. The decrease of hip and trunk flexion and the lower inclination of the pole during the poling phase suggested a reduced effectiveness of the force application which could lead to a decrease in the cycle velocity. 相似文献
44.
Debarnot U Creveaux T Collet C Gemignani A Massarelli R Doyon J Guillot A 《Brain and cognition》2009,69(2):398-405
A wide range of experimental studies have provided evidence that a night of sleep may enhance motor performance following physical practice (PP), but little is known, however, about its effect after motor imagery (MI). Using an explicitly learned pointing task paradigm, thirty participants were assigned to one of three groups that differed in the training method (PP, MI, and control groups). The physical performance was measured before training (pre-test), as well as before (post-test 1) and after a night of sleep (post-test 2). The time taken to complete the pointing tasks, the number of errors and the kinematic trajectories were the dependent variables. As expected, both the PP and the MI groups improved their performance during the post-test 1. The MI group was further found to enhance motor performance after sleep, hence suggesting that sleep-related effects are effective following mental practice. Such findings highlight the reliability of MI in learning process, which is thought consolidated when associated with sleep. 相似文献
45.
As an index of the propensity of the plurality voting procedure to produce an outcome which conflicts with the wishes of the majority, the likelihood of the weak Borda effect is flawed and misleading. It is recommended that researchers discontinue using the quantity for this purpose, since it is possible to obtain directly the likelihood of plurality/majority disagreement. 相似文献
46.
Raphael Gillett 《Behavior research methods》1991,23(3):442-446
A method of sample-size determination for use in attempts to replicate experiments is described. It is appropriate in situations where there is uncertainty about the magnitude of the effect under investigation. The procedure uses information supplied by the original experiment to establish a distribution of probable effect sizes. The sample size to be used in a replication study is that which provides an expected power of the desired amount over the distribution of probable effect sizes A FORTRAN 77 program is presented that permits rapid calculation of sample size in replication attempts employing comparisons of means, correlation coefficients, or proportions. 相似文献
47.
M. F. Dorman M. Studdert-Kennedy L. J. Raphael 《Attention, perception & psychophysics》1977,22(2):109-122
Three experiments assessed the roles of release bursts and formant transitions as acoustic cues to place of articulation in syllable-initial voiced stop consonants by systematically removing them from American English /b,d,g/, spoken before nine different vowels by two speakers, and by transposing the bursts across all vowels for each class of stop consonant. The results showed that bursts were largely invariant in their effect, but carried significant perceptual weight in only one syllable out of 27 for Speaker 1, in only 13 syllables out of 27 for Speaker 2. Furthermore, bursts and transitions tended to be reciprocally related: Where the perceptual weight of one increased, the weight of the other declined. They were thus shown to be functionally equivalent, context-dependent cues, each contributing to the rapid spectral changes that follow consonantal release. The results are interpreted as pointing to the possible role of the front-cavity resonance in signaling place of articulation. 相似文献
48.
An instrument for the analysis of verbal statements along a continuum from most intimate to least intimate is the Levels of Verbal Intimacy Technique (LOVIT). It enables an observer to place all verbal statements in one of ten categories along this intimacy continuum. The technique has been used in research on small groups and also can be used to provide feedback in groups, for example, to couples in marriage counseling. 相似文献
49.
Raphael J. Becvar 《Journal of counseling and development : JCD》1978,57(3):160-162
Self-help books may be a useful resource to counselors in their work with counselees. They may contribute, however, to the development of psychological problems or prevent people from seeking help when needed. The Utopia promised by self-help books may be a pathology in its own right as marketing experts “hype” a book beyond any reasonable evidence of its efficacy. Ethical questions are raised as well as action suggestions for authors, professional counselors, and professional organizations. 相似文献
50.