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371.
372.
The role of bottom-up processes in our perception of reversible figures was examined. In Experiment 1 the overlapping squares figure and nonsense reversible figures were used. The effects of adapting subjects for differing durations to an unambiguous version of the figure before presentation of the traditional reversible figure were determined under conditions of varying precision of fixation. In Experiment 2 the research was expanded to other examples of reversible figures. In both experiments, results with two dependent measures (the subject's first percept and the number of reversals reported) were generally consistent with the interpretation of bottom-up processes underlying the adaptation effects. However, the crucial role of stimulus and procedural variables and the differential sensitivity of the two dependent measures was demonstrated. 相似文献
373.
Steven A. Humphries Nigel R. Long Malcolm H. Johnson 《Attention, perception & psychophysics》1994,56(6):637-648
The present study investigated the psychophysical characteristics of potassium iontophoresis and its suitability as an experimental pain stimulus. Experiment 1 investigated the optimal duration of the pain stimulus for reliable reporting across repeated trials and whether the relationship between stimulus and subject response was linear, logarithmic, or a power function. In Experiment 2, the optimal interstimulus interval (ISI) was determined for reliable pain reporting, and stimulus history effects, both in terms of session effects and the effects of immediately preceding stimuli, were evaluated. In Experiment 3, potassium iontophoresis was compared with a sodium iontophoresis control. Linear functions described the stimulus-pain relationship best. No significant differences in the goodness-of-fit coefficients of determination, correlations, or coefficients of variation were found for the stimulus durations of 1, 2, and 4 sec. Significant stimulus history effects were found across a session, with adaptation and enhancement of responding for low- and moderate-intensity stimuli, respectively. The effects of the immediately preceding stimuli were suppression or enhancement of pain response, depending on the ISI, the preceding stimulus intensity, and the present stimulus intensity. Potassium iontophoresis was a significantly more effective pain stimulus than was sodium iontophoresis. It was concluded that potassium iontophoresis is a convenient and reliable experimental pain stimulus, which can be presented rapidly and repeatedly with minimal loss in consistency of subject pain report. Potassium iontophoresis provides a tool for investigating the neural modulation of pain in the relative absence of inflammation processes and tissue damage. 相似文献
374.
Using ratings provided by significant others, we examined characteristics of 819 normal men whose scores on the Masculinity-Femininity scale (Scale 5) of the Minnesota Multiphasic Personality Inventory-2 (MMPI-2) ranged from low to high. Also examined were the possible effects of educational level as a moderator variable. Only one external characteristic was correlated with Scale 5 scores at a level of significance that could not be attributed to chance, and that correlation was negative, whereas previous literature indicated a positive relationship. The findings were essentially the same whether or not the effects of education were controlled. Regardless of Scale 5 scores and the higher the men's educational levels, the more positive were ratings by their partners. In general, the results do not support the usefulness of Scale 5 in describing the personalities and behaviors of normal men. 相似文献
375.
Rex Forehand Michelle Wierson Amanda McCombs Thomas Robert Fauber Lisa Armistead Tracy Kemptom Nicholas Long 《Journal of abnormal child psychology》1991,19(1):97-111
The purposes of this study were to examine young adolescent functioning over a 2-year period after divorce and to assess the role of two family factors, interpersonal conflict and the parent-adolescent relationship, in predicting such functioning. One hundred and twelve young adolescents, their mothers, and their social studies teachers served as participants. One-half of the adolescent were from recently divorced families and one-half were from married families. Mothers completed measures concerning interparental conflict and the parent-adolescent relationship, adolescents completed a measure of the relationship, and teachers completed measures assessing four areas of adolescent functioning. The results indicated that adolescents from divorced families were functioning less well than those from married families. There were no changes in adolescent functioning and the parent-adolescent relationship from the first to second year postdivorce. High levels of interparental conflict in divorced families were associated with more parent-adolescent relationship problems. In turn parent-adolescent relationships problems served as the best predictor of concurrent and subsequent difficulty in adolescent functioning.This study was supported, in part, by the William T. Grant Foundation and the University of Georgia's Institute for Behavioral Research. 相似文献
376.
结合反应时方法和多维度驾驶风格量表,以140名公交驾驶员为研究对象,采用2(危险类型:隐藏危险、明显危险)×2(驾驶员分组:有无交通违规/事故记录)的混合实验设计考察危险类型对危险知觉的影响。结果发现:驾驶员对明显危险的反应时比隐藏危险短,无交通违规/事故记录驾驶员对明显和隐藏危险的反应时均比有交通违规/事故记录驾驶员短。控制驾驶风格后,危险类型主效应不再显著。结果表明,公交驾驶员危险知觉的特点随着危险类型不同而变化。 相似文献
377.
与传统的纸笔测验(Paper And Pencil Based Test, P&P)相比计算机化自适应测验(Computerized Adaptive Testing, CAT)根据被试的作答反应自适应地选择题目, 它不仅缩短了测验长度, 还极大地提高了测验的准确性。然而, 目前绝大多数CAT不允许被试修改答案, 研究者主要担心修改答案会降低CAT的有效性。允许修改答案符合被试一贯的测验习惯, 修改之后的分数更能反映被试真实的水平, 从而能够进一步促进CAT在实际中的应用。现有的研究主要从三个方面提出了可修改答案CAT的控制方法:一是测验设计; 二是改进选题策略; 三是建构模型。未来的研究应进一步探讨这些方法之间的比较与结合, 以及对可修改答案认知诊断CAT (Cognitive Diagnostic CAT, CD-CAT)的研究。 相似文献
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380.
西方组织公平领域的主流观点认为要想提高员工的分配公平感,应着力提高分配过程的公平性以及上下级互动的公平性,即程序公平和互动公平。本研究发现:在中国组织情境下,较之程序公平和互动公平(人际公平、信息公平),分配制度公平对员工分配公平感的解释力最强;在分配制度不公平的情境下,程序公平和人际公平才会影响分配公平感,仅仅起到亡羊补牢的作用。 相似文献