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排序方式: 共有192条查询结果,搜索用时 15 毫秒
1.
Florian Schuberth Tamara Schamberger Mikko Rönkkö Yide Liu Jörg Henseler 《The British journal of mathematical and statistical psychology》2023,76(3):682-694
In a recent article published in this journal, Yuan and Fang (British Journal of Mathematical and Statistical Psychology, 2023) suggest comparing structural equation modeling (SEM), also known as covariance-based SEM (CB-SEM), estimated by normal-distribution-based maximum likelihood (NML), to regression analysis with (weighted) composites estimated by least squares (LS) in terms of their signal-to-noise ratio (SNR). They summarize their findings in the statement that “[c]ontrary to the common belief that CB-SEM is the preferred method for the analysis of observational data, this article shows that regression analysis via weighted composites yields parameter estimates with much smaller standard errors, and thus corresponds to greater values of the [SNR].” In our commentary, we show that Yuan and Fang have made several incorrect assumptions and claims. Consequently, we recommend that empirical researchers not base their methodological choice regarding CB-SEM and regression analysis with composites on the findings of Yuan and Fang as these findings are premature and require further research. 相似文献
2.
Hartmann Scheiblechner 《Psychometrika》1995,60(2):281-304
The concept of an ordinal instrumental probabilistic comparison is introduced. It relies on an ordinal scale given a priori and on the concept of stochastic dominance. It is used to define a weakly independently ordered system, or isotonic ordinal probabilistic (ISOP) model, which allows the construction of separate sample-free ordinal scales on a set of subjects and a set of items. The ISOP-model is a common nonparametric theoretical structure for unidimensional models for quantitative, ordinal and dichotomous variables.Fundamental theorems on dichotomous and polytomous weakly independently ordered systems are derived. It is shown that the raw score system has the same formal properties as the latent system, and therefore the latter can be tested at the observed empirical level.I wish to thank 3 reviewers and 2 editors who contributed a lot to the readability and precision of the article. 相似文献
3.
Donald G. Morrison 《Psychometrika》1981,46(2):143-151
A simple stochastic model is formulated in order to determine the optimal time between the first test and the second test when the test-retest method of assessing reliability is used. A forgetting process and a change in true score process are postulated. The optimal time between tests is derived by maximizing the probability that the respondent has not remembered the response on the first test and has not had a change in true score. The resulting test-retest correlation is then found to be a linear function of the true reliability of the test, where the slope of this function is the key probability of not remembering and having no change in true score. Some numerical examples and suggestions for using the results in empirical studies are given. Specific recommendations are presented for improved design and analysis of intentions data.This research was made possible by a grant from the Center for Food Policy Research, Graduate School of Business, Columbia University, New York, New York, 10027. 相似文献
4.
Huynh Huynh 《Psychometrika》1977,42(4):601-608
Two simple classes of mastery scores which are suitable for hand calculations are presented for beta-binomial test score distributions
combined with linear and cubic referral success. The models provide a simple way to explore the consequences of selecting
an arbitrary mastery score. Such assessment would be useful whenever the test user is not willing to posta priori a loss ratio, but wishes to look at the various consequences before aiming at a particular score. 相似文献
5.
The purpose of this study was to determine the effects of teacher feedback delivered via a public address system on the off-task behavior of elementary-school physical education students. A multiple baseline design across three classes was used in this investigation. Results indicated a consistent decline in off-task behavior when the public address feedback system was used. 相似文献
6.
Two new tests for a model for the response times on pure speed tests by Rasch (1960) are proposed. The model is based on the
assumption that the test response times are approximately gamma distributed, with known index parameters and unknown rate
parameters. The rate parameters are decomposed in a subject ability parameter and a test difficulty parameter. By treating
the ability as a gamma distributed random variable, maximum marginal likelihood (MML) estimators for the test difficulty parameters
and the parameters of the ability distribution are easily derived. Also the model tests proposed here pertain to the framework
of MML. Two tests or modification indices are proposed. The first one is focused on the assumption of local stochastic independence,
the second one on the assumption of the test characteristic functions. The tests are based on Lagrange multiplier statistics,
and can therefore be computed using the parameter estimates under the null model. Therefore, model violations for all items
and pairs of items can be assessed as a by-product of one single estimation run. Power studies and applications to real data
are included as numerical examples. 相似文献
7.
The fixed point combinator (Y) is an important non-proper combinator, which is defhable from a combinatorially complete base. This combinator guarantees
that recursive equations have a solution. Structurally free logics (LC) turn combinators into formulas and replace structural rules by combinatory ones. This paper introduces the fixed point and
the dual fixed point combinator into structurally free logics. The admissibility of (multiple) cut in the resulting calculus is not provable by a simple adaptation of the similar proof for LC with proper combinators. The novelty of our proof—beyond proving the cut for a newly extended calculus–is that we add a fourth induction to the by-and-large Gentzen-style proof.
Presented by Robert Goldblatt 相似文献
8.
Volker Halbach 《Studia Logica》1999,62(3):353-370
Some axiomatic theories of truth and related subsystems of second-order arithmetic are surveyed and shown to be conservative over their respective base theory. In particular, it is shown by purely finitistically means that the theory PA ÷ "there is a satisfaction class" and the theory FS of [2] are conservative over PA. 相似文献
9.
探究带宽选择方法、样本量、题目数量、等值设计、数据模拟方式对项目反应理论观察分数核等值的影响。通过两种数据模拟方式,获得研究数据,并计算局部与全域评价指标。研究发现,在随机组设计中,带宽选择方法表现相似;考生样本量和题目数量影响甚微。在非等组设计中,惩罚法与Silverman经验准则表现优异;增加题目量可降低百分相对误差和随机误差;增加样本量导致百分相对误差变大,随机误差减小。数据模拟方式可影响等值评价。未来应重点关注等值系统评估。 相似文献
10.
The Academic Advantage of Devotion: Measuring Variation in the Value of Weekly Worship in Late Adolescence on Educational Attainment Using Propensity Score Matching 下载免费PDF全文
Jeannie Kim 《Journal for the scientific study of religion》2015,54(3):555-574
This study measures the effect of regular worship attendance at age 17 on total years of schooling by age 25, using data from the National Longitudinal Survey of Youth 1997. Expanding on previous work, this study estimates differences in the impact of worship attendance by race and family income status using propensity score matching. Individuals who frequently attend religious services complete .69 more years of schooling than similar individuals who do not frequently attend services. There are significantly greater returns to attendance for low‐income youth and no significant difference in returns by religious affiliation. These findings suggest that religious observance provides greater benefits for low‐income individuals or perhaps provides resources high‐income individuals have access to elsewhere. Moreover, this study extends previous work by examining a more recent and nationally representative sample of youth and by using methods that allow for greater causal inference. 相似文献