信度系数与观测分数和潜在特质的相关比

在经典真分数模型中,信度系数R=D(T)/D(X)。通常认为,信度系数与项目反应理论没有什么联系。事实上,信度系数恰好等于考生观测分数与潜在特质分数的非线性相关比η_(xθ)~2=1-MD(x|θ)/D(X),据此我们得出估计信度系数的一种新途径,同时讨论了x、θ的相关系数与相关比η_(xθ)~2的关系。     

A numerical approach to the approximate and the exact minimum rank of a covariance matrix

A concept of approximate minimum rank for a covariance matrix is defined, which contains the (exact) minimum rank as a special case. A computational procedure to evaluate the approximate minimum rank is offered. The procedure yields those proper communalities for which the unexplained common variance, ignored in low-rank factor analysis, is minimized. The procedure also permits a numerical determination of the exact minimum rank of a covariance matrix, within limits of computational accuracy. A set of 180 covariance matrices with known or bounded minimum rank was analyzed. The procedure was successful throughout in recovering the desired rank.The authors are obliged to Paul Bekker for stimulating and helpful comments.     

The typical rank of tall three-way arrays

The rank of a three-way array refers to the smallest number of rank-one arrays (outer products of three vectors) that generate the array as their sum. It is also the number of components required for a full decomposition of a three-way array by CANDECOMP/PARAFAC. The typical rank of a three-way array refers to the rank a three-way array has almost surely. The present paper deals with typical rank, and generalizes existing results on the typical rank ofI × J × K arrays withK = 2 to a particular class of arrays withK ≥ 2. It is shown that the typical rank isI when the array is tall in the sense thatJK − J < I < JK. In addition, typical rank results are given for the case whereI equalsJK − J. The author is obliged to Henk Kiers, Tom Snijders, and Philip Thijsse for helpful comments.     

Relationship of social rank in mice to growth,endurance, and fertility

The influence of the social rank of male mice, determined by the outcome of fights, was assessed on their growth, treadmill performance, open-field behavior, and morphometric traits. Fertility of mated females was also investigated. Special attention was paid to the relationship between the male's social rank and body weight. Winners of fights were heavier than losers; their latencies were shorter, and they showed more locomotor activity in an open field test. Winners also had higher absolute testicular and epididymal weights. These males had a positive influence on the reproductive fitness of the females with which they were mated.     

用典型相关进一步研究大学生亲社会倾向和亲社会推理的关系

本研究使用修订后的亲社会倾向量表(PTM)和亲社会客观推理量表(PROM),对大学生群体进行了测查,并采用简单相关和典型相关探讨亲社会倾向和亲社会推理的关系。结果表明:大学生的亲社会倾向由高到低依次为:紧急的、利他的、情绪的、依从的、匿名的和公开的;他们的亲社会推理由高到低依次是:需要定向、刻板定向、内化价值定向、享乐主义定向和赞扬定向。6种亲社会倾向都与刻板定向推理、内化价值定向推理正相关;紧急的、依从的亲社会倾向与需要定向推理正相关;匿名的亲社会倾向与享乐主义定向推理负相关。从典型相关分析结果来看,两者间的整体关联程度没有理论预期的高,典型变量所代表的亲社会倾向主要是紧急的、匿名的、依从的亲社会倾向,而这些亲社会倾向主要由内化价值定向推理、刻板定向推理、需要定向推理来解释。     

Aggregating to the between-person level in idiographic research designs: Personal goal research as an example of the need to distinguish between reliability and homogeneity

In several areas of personality research (e.g., personal networks, interpersonal behaviour, academic effort), the empirical data represent a multilevel structure, in which within-person variables are nested within individuals. Both within-person variation and between-person differences can be related to outcome variables (e.g., emotions, life satisfaction). One major precondition for aggregating within-person data to the between-person level is sufficient reliability of the aggregated data, a point that has received scant attention in previous research. Drawing on the example of personal goal research, we recommend that the two major forms of the intraclass correlation coefficient—the ICC(1) and the ICC(2)—be applied to within-person data in idiographic research designs. These indices allow the homogeneity and reliability of within-person data to be determined separately. Their application is illustrated using data from a study with 4,565 young adults.     

Person and situation effects should be measured in the same terms. A comment on Funder (2006)

In a recent paper in this journal, Funder [Funder, D. C. (2006). Towards a resolution of the personality triad: persons, situations and behaviors. Journal of Research in Personality, 40, 21–34] stated that the effects of person and situation on behavior were independent in principle. In this comment, we argue that Funder’s claim is not a basic law of psychology, but a product of the common statistical approach to define person effects by Pearson correlations and situation effects by differences in group means. As an alternative, we suggest using Intraclass correlations (ICC) with an absolute agreement definition as indicators of intraindividual stability. This approach enables us to directly determine, how much people’s behavior varies or remains the same across situations. We demonstrate the usefulness of the ICC approach, by applying it to both hypothetical and empirical data. However, the question which model is more appropriate is a conceptual one and cannot be answered empirically.     

The philosophy of the Yijing and Jungian analytical psychology: a comparative study

The Yijing (Book of Changes) occupied a very significant position in C.G. Jung’s mind, which was closely related to Richard Wilhelm’s active recommendation and introduction of the Yijing wisdom. Inspired by the Yijing, Jung set forth the ‘principle of synchronicity’, by which scholars tend to discuss the relationship between Yijing and Jungian psychology. In fact, Jungian analytical psychology conceives in-depth onto-cosmological connotations corresponding to the philosophy of the Yijing. The terms invented or employed by Jung such as ‘archetype’, ‘Self’, ‘individuation’, ‘mandala,’ ‘anima and animus’, ‘persona and shadow’ are interrelated with the connotations of Taiji (Supreme Ultimate) (○) and liang yi (two-mode) () in the Yijing philosophy. A comparative study of the two disciplines can help us gain a more comprehensive and deeper understanding of both, and further improve the exchanges of Eastern and Western cultures.     

大数据时代背景下的医学思考*--转化医学新趋势前瞻

作为21世纪最具活力的医学发展模式,转化医学为基础和临床构建了交流沟通的高效平台,当前正朝着多学科、多领域、多系统的方向迈进。随着信息技术与生命科学的交叉融合,生物医学已经迈入大数据时代。大数据既保证了医学实践的深度,有深度才能洞悉本质;又保证了医学实践的高度,有高度才能总揽全局。因此,大数据的出现为深陷还原论泥潭的现代医学提供了有效的解决途径。大数据浪潮对医学基础研究和医疗实践的深远影响,必将为转化医学发展带来新的发展机遇。     

Equivalence tests for comparing correlation and regression coefficients

Equivalence tests are an alternative to traditional difference‐based tests for demonstrating a lack of association between two variables. While there are several recent studies investigating equivalence tests for comparing means, little research has been conducted on equivalence methods for evaluating the equivalence or similarity of two correlation coefficients or two regression coefficients. The current project proposes novel tests for evaluating the equivalence of two regression or correlation coefficients derived from the two one‐sided tests (TOST) method (Schuirmann, 1987, J. Pharmacokinet. Biopharm, 15, 657) and an equivalence test by Anderson and Hauck (1983, Stat. Commun., 12, 2663). A simulation study was used to evaluate the performance of these tests and compare them with the common, yet inappropriate, method of assessing equivalence using non‐rejection of the null hypothesis in difference‐based tests. Results demonstrate that equivalence tests have more accurate probabilities of declaring equivalence than difference‐based tests. However, equivalence tests require large sample sizes to ensure adequate power. We recommend the Anderson–Hauck equivalence test over the TOST method for comparing correlation or regression coefficients.