Psychometrika
Công bố khoa học tiêu biểu
* Dữ liệu chỉ mang tính chất tham khảo
Sắp xếp:
A strong true-score theory, with applications
Psychometrika - Tập 30 - Trang 239-270 - 1965
A “strong” mathematical model for the relation between observed scores and true scores is developed. This model can be used
...... hiện toàn bộ
The relation of the reliability of multiple-choice tests to the distribution of item difficulties
Psychometrika - Tập 17 - Trang 181-194 - 1952
Under certain assumptions an expression, in terms of item difficulties and intercorrelations, is derived for the curvilinear correlation of test score on the “ability underlying the test,” this ability being defined as the common factor of the item tetrachoric intercorrelations corrected for guessing. It is shown that this curvilinear correlation is equal to the square root of the test reliability...... hiện toàn bộ
The unique correspondence of the item response function and item category response functions in polytomously scored item response models
Psychometrika - Tập 59 Số 3 - Trang 391-404 - 1994
A Restricted Four-Parameter IRT Model: The Dyad Four-Parameter Normal Ogive (Dyad-4PNO) Model
Psychometrika - Tập 85 Số 3 - Trang 575-599 - 2020
The Heterogeneous P-Median Problem for Categorization Based Clustering
Psychometrika - Tập 77 - Trang 741-762 - 2012
The p-median offers an alternative to centroid-based clustering algorithms for identifying unobserved categories. However, existing p-median formulations typically require data aggregation into a single proximity matrix, resulting in masked respondent heterogeneity. A proposed three-way formulation of the p-median problem explicitly considers heterogeneity by identifying groups of individual respo...... hiện toàn bộ
An empirical study of the effect of heterogeneous within-groups variance upon certainF-tests of significance in analysis of variance
Psychometrika - Tập 5 - Trang 263-274 - 1940
In the application of the analysis of variance to data obtained in educational methods experiments which involve several classes of several schools, one assumption is that of homogeneity in the variances of pupil scores from school to school. It is shown that such variances on representative educational achievement tests are heterogeneous. The effects of this heterogeneity upon theF-tests of signi...... hiện toàn bộ
An Exact Method for Partitioning Dichotomous Items Within the Framework of the Monotone Homogeneity Model
Psychometrika - Tập 80 - Trang 949-967 - 2015
The monotone homogeneity model (MHM—also known as the unidimensional monotone latent variable model) is a nonparametric IRT formulation that provides the underpinning for partitioning a collection of dichotomous items to form scales. Ellis (Psychometrika 79:303–316, 2014, doi:
10.1007/s11336-013-9341-5
) has recently derived inequalities that ar...... hiện toàn bộ
A new algorithm for the least-squares solution in factor analysis
Psychometrika - Tập 48 - Trang 597-605 - 1983
A new algorithm to obtain the least-squares or MINRES solution in common factor analysis is presented. It is based on the up-and-down Marquardt algorithm developed by the present authors for a general nonlinear least-squares problem. Experiments with some numerical models and some empirical data sets showed that the algorithm worked nicely and that SMC (Squared Multiple Correlation) performed best...... hiện toàn bộ
Program of the 62nd Annual Meeting of the Psychometric Society
Psychometrika - Tập 62 - Trang 599-602 - 1997
An alternating least squares method for the weighted approximation of a symmetric matrix
Psychometrika - Tập 58 - Trang 115-118 - 1993
Bailey and Gower examined the least squares approximationC to a symmetric matrixB, when the squared discrepancies for diagonal elements receive specific nonunit weights. They focussed on mathematical properties of the optimalC, in constrained and unconstrained cases, rather than on how to obtainC for any givenB. In the present paper a computational solution is given for the case whereC is constrai...... hiện toàn bộ
Tổng số: 2,561
- 1
- 2
- 3
- 4
- 5
- 6
- 10