Assessing the quality of tests : Revision of the EFPA review model

Resumen tomado de la publicación

Invariance levels across language versions of the PISA 2009 reading comprehension tests in Spain

Resumen tomado de la publicaci??n

Application of cognitive diagnosis models to competency-based situational judgment tests

Resumen tomado de la publicaci??n

Estimating the reliability coefficient of tests in presence of missing values

Resumen tomado de la publicaci??n

Inequalities of the results of the PISA tests due to teacher???s factors : differences between countries

T??tulo, resumen y palabras clave tambi??n en espa??ol

Traditional scores versus IRT estimates on forced-choice tests based on a dominance model

Resumen tomado de la publicaci??n

A comparison of discriminant logistic regression and Item Response Theory Likelihood-Ratio Tests for Differential Item Functioning (IRTLRDIF) in polytomous short tests

Resumen tomado de la publicaci??n

Oxidation of silicon: further tests for the interfacial silicon emission model

The classical description of Si oxidation given by Deal and Grove has well-known limitations for thin oxides (below 200 Ã). Among the large number of alternative models published so far, the interfacial emission model has shown the greatest ability to fit the experimental oxidation curves. It relies on the assumption that during oxidation Si interstitials are emitted to the oxide to release strain and that the accumulation of these interstitials near the interface reduces the reaction rate there. The resulting set of differential equations makes it possible to model diverse oxidation experiments. In this paper, we have compared its predictions with two sets of experiments: (1) the pressure dependence for subatmospheric oxygen pressure and (2) the enhancement of the oxidation rate after annealing in inert atmosphere. The result is not satisfactory and raises serious doubts about the model’s correctness

Ab initio benchmark study for the oxidative addition of CH4 to Pd: importance of basis-set flexibility and polarization

To obtain a state-of-the-art benchmark potential energy surface (PES) for the archetypal oxidative addition of the methane C-H bond to the palladium atom, we have explored this PES using a hierarchical series of ab initio methods (Hartree-Fock, second-order Møller-Plesset perturbation theory, fourth-order Møller-Plesset perturbation theory with single, double and quadruple excitations, coupled cluster theory with single and double excitations (CCSD), and with triple excitations treated perturbatively [CCSD(T)]) and hybrid density functional theory using the B3LYP functional, in combination with a hierarchical series of ten Gaussian-type basis sets, up to g polarization. Relativistic effects are taken into account either through a relativistic effective core potential for palladium or through a full four-component all-electron approach. Counterpoise corrected relative energies of stationary points are converged to within 0.1-0.2 kcal/mol as a function of the basis-set size. Our best estimate of kinetic and thermodynamic parameters is -8.1 (-8.3) kcal/mol for the formation of the reactant complex, 5.8 (3.1) kcal/mol for the activation energy relative to the separate reactants, and 0.8 (-1.2) kcal/mol for the reaction energy (zero-point vibrational energy-corrected values in parentheses). This agrees well with available experimental data. Our work highlights the importance of sufficient higher angular momentum polarization functions, f and g, for correctly describing metal-d-electron correlation and, thus, for obtaining reliable relative energies. We show that standard basis sets, such as LANL2DZ+ 1f for palladium, are not sufficiently polarized for this purpose and lead to erroneous CCSD(T) results. B3LYP is associated with smaller basis set superposition errors and shows faster convergence with basis-set size but yields relative energies (in particular, a reaction barrier) that are ca. 3.5 kcal/mol higher than the corresponding CCSD(T) values

Inter-comparisons of articulation tests on normal and hard-of-hearing listeners

This paper discusses a study undertaken to test various speech discrimination tests.

A comparison of the QuickSIN and TEN tests: two recent tests designed to predict patient benefit from high frequency amplification

This paper presents a comparison of two tests designed to predict which hearing impaired patients may benefit from high frequency amplification.

An analysis of the Woodcock Reading Mastery Tests and the Diagnostic Reading Scales for use with hearing-impaired children

This paper examines two individually administered diagnostic reading tests, the Woodcock Reading Mastery Tests and the Diagnostic Reading Scales, to determine their value for use with hearing-impaired children.

Comparison of video and toy reinforcers to motivate infants/toddlers for hearing tests

This paper is a study of the effectiveness between video and toy reinforcer types to motivate infants/toddlers for hearing tests. No significant differences were found between age groups or gender. Toy reinforcers were found to produce on average two more threshold estimates compared to video reinforcers. Variety, color and animation of animals may have contributed to this difference.

Comparing two receptive vocabulary tests: The receptive one word vocabulary test and the peabody picture vocabulary test

This paper discusses a study to determine whether the Receptive One Word Picture Vocabulary Test is more useful than the Peabody Picture Vocabulary Test in assessing the vocabularies of hearing imparied children.

Are our tests accurate?

This paper presents a study investigating the accuracy of two standardized individual achievement tests, the Wechsler Individual Achievement (WIAT) and the Peabody Individual Achievement Test-Revised (PIAT-R). The study compares the students' scores and includes students' opinions of the tests.