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排序方式: 共有102条查询结果,搜索用时 15 毫秒
21.
Samantha J. Newell Anna Chur-Hansen Peter Strelan 《Australian journal of psychology》2020,72(2):123-132
22.
Anke Slabbert 《Journal of Psychology in Africa》2019,29(2):176-181
This study explored how students’ perceptions of their lecturers’ dress code influenced their inferences about the professional competences of the lecturers. Survey respondents were 102 students from a South African university of technology (female = 60%; age range = 18 to 25 years, SD: Image 1 = 0.75; Image 2 = 0.60; Image 3 = 0.83 and Image 4 = 0.67). They responded to a structured survey with picture illustration figures of alternative dress code and across dimensions of professional competences: rapport, fairness, knowledge and credibility, and organisation and preparation. The findings suggest that lecturers’ dress code does influence students perceptions of lecturers’ qualities in the academic work environment. Results showed that students percieve both male and female professionally dressed lecturers more positively than casually dressed lecturers. Furthermore, instructor attire did not affect female and male students differently. 相似文献
23.
This paper presents a conceptual model of means–end theory. The proposed model, built on Gutman's (1982) contributions to means–end theory, consists of four conceptual categories that are linked together. The conceptual categories are context‐nested consumer choices, attributes of the consumer choices, consequences and values. The discussion uses results of four cases to illustrate the conceptual categories of the proposed explanatory means–end model. Copyright © 2002 Henry Stewart Publications Ltd. 相似文献
24.
Miller ML Brodkorb GW Branch MN 《Journal of the experimental analysis of behavior》2001,76(2):217-234
Four pigeons responded under a fixed-interval 8-min schedule of food delivery in which the amount of food delivered at the end of each interval depended on performance during the interval (i.e., a correlated schedule). Specifically, duration of access to grain was contingent upon the number of responses made during the first 4 min of the interval. This differential outcome did not affect response rates or patterning relative to performance under a simple fixed-interval 8-min schedule. Behavior under the correlated schedule was then investigated under doses of cocaine ranging from 0.3 to 10.0 mg/kg. A bitonic dose-response function was obtained for response rates and the time with head in the food hopper, whereas dose-dependent decreases were observed in the mathematical index of curvature (Fry, Kelleher, & Cook, 1960). The dose that produced the greatest increase in the head-in-hopper time was then administered prior to each session. Following repeated administration of cocaine, disruptions in response patterning were attenuated for all 4 pigeons; tolerance was also observed to the rate-increasing effects and increased head-in-hopper time for 2 pigeons after chronic cocaine administration. Tolerance therefore developed despite the fact that the initial effect of cocaine was to increase the amount of food obtained. 相似文献
25.
The Open Letter written by 138 major representatives of Islam to the leaders of the Christian churches, on 13 October 2007, came as something of a surprise. Perhaps more surprisingly, in 1283, the Catalan theologian, Ramon Llull, wrote imaginatively of exactly such a letter in one of his novels, thus demonstrating that the interfaith question is not just a problem of our modern times, which became acute only on September 11. On the contrary, the churches have always been conscious of this interfaith context. Yet methods of tackling the problem have differed widely down the centuries and among Christian traditions. The solution proposed by Ramon Llull and analysed in this article starts from the common acceptance of the attributes of God in all three monotheistic religions. It deserves our attention not only as an interesting historical example but also as a way of avoiding some of our current problems and impasses. 相似文献
26.
In this study we attempt to determine whether dysgenic fertility is associated with the Jensen effect. This is investigated with respect to a US population representative sample of 8110 individuals from the National Longitudinal Survey of Youth for whom there exists complete data on IQ and fertility. In addition to the general sample, the sample was also broken out by race and sex so as to examine whether or not the Jensen effect manifested amongst different sub-populations. The method of correlated vectors revealed significant Jensen effects in five of the seven samples, and in all cases the effect was in a direction indicating that subtests with higher g-loadings were associated with larger dysgenic fertility gradients. The magnitude of the difference between Spearman’s ρ and Pearson’s r was non-significant in all cases, suggesting that biasing factors were minimally influencing the result. This finding suggests that dysgenesis occurs on the ‘genetic g’ at the heart of the Jensen effect nexus, unlike the Flynn effect, which is ‘hollow’ with respect to g. Finally, the finding is discussed in the context of two converging lines of evidence indicating that genotypic IQ or ‘genetic g’ really has been declining over the last century. 相似文献
27.
Black/White differences in mean IQ have been clearly shown to strongly correlate with g loadings, so large group differences on subtests of high cognitive complexity and small group differences on subtests of low cognitive complexity. IQ scores have been increasing over the last half century, a phenomenon known as the Flynn effect. Flynn effect gains are predominantly driven by environmental factors. Might these factors also be responsible for group differences in intelligence? The empirical studies on whether the pattern of Flynn effect gains is the same as the pattern of group differences yield conflicting findings. A psychometric meta-analysis on all studies with seven or more subtests reporting correlations between g loadings and standardized score gains was carried out, based on 5 papers, yielding 11 data points (total N = 16,663). It yielded a true correlation of − .38, and none of the variance between the studies could be attributed to moderators. It appears that the Flynn effect and group differences have different causes. Suggestions for future research are discussed. 相似文献
28.
We model conducting pentagon chains with a multi-orbital Hubbard model and prove that well below half filling, exact ferromagnetic ground states appear. The rigorous method we use is based on the transformation of original hamiltonian into positive semidefinite form. This technique is independent of the spatial dimension and does not require integrability of the model. The obtained ferromagnetism is connected to dispersionless bands but in a much broader sense than flat-band ferromagnetism requires, where on every site a Hubbard term is present. In our case, only a small percentage of, even randomly distributed, sites are only interacting. 相似文献
29.
多分属性认知诊断模型(CDMs)比传统的二分属性CDMs提供更详细的诊断反馈信息,但现有大部分多分属性CDMs并不具备直接分析多级(或混合)评分数据的功能。本文基于等级反应模型对重参数化多分属性DINA模型进行多级评分拓广,开发一个可处理多级评分数据的等级反应多分属性DINA模型。首先通过实证数据分析呈现新模型的现实可应用性;然后通过模拟研究探究新模型的参数估计返真性。结果表明,新模型满足同时处理多分属性和多级评分数据的现实需求;且具备良好的心理计量学性能,但对测验质量有一定要求(如题目质量较高且测验Qp矩阵具有完备性等)。 相似文献
30.
非参数认知诊断分类方法非常适合课堂评估,其诊断结果采用0-1形式而缺乏概率化表征,不能精细地区分被试属性掌握程度的差异或变化,还缺乏可用于评价真实测验分类结果的信度和效度指标。要刻画被试属性掌握程度的差异,首要的问题是要为非参数认知诊断方法提供一种可以量化属性掌握概率的方法。针对此问题,基于二项分布和玻尔兹曼分布提出非参数认知诊断方法下诊断结果的概率化表征方法,并用于构建分类准确性和分类一致性指标。模拟研究与实测数据分析结果显示:概率化表征方法与非参数认知诊断方法的分类结果高度一致;概率化表征方法与认知诊断模型所得的属性掌握概率十分接近;概率化表征方法所得的属性(模式)掌握概率可用于计算属性(模式)分类准确性和分类一致性指标,在实际测验情景下可作为信度和效度指标,评价诊断结果的重测一致率和判准率。 相似文献