Results 61 to 70 of about 466,548 (211)

Economic inequality and academic perseverance: Evidence from 73 countries

open access: yesBritish Journal of Educational Psychology, EarlyView.
Abstract Background Academic perseverance is important for educational success, yet research has focused mainly on individual and proximal environmental factors, with limited attention to broader socioeconomic contexts. Aims This study examined whether national economic inequality was associated with students' academic perseverance and whether this ...
Yifan Wang, Yanru Liu, Dennis Alonzo
wiley   +1 more source

A Bayes factor framework for unified parameter estimation and hypothesis testing

open access: yesBritish Journal of Mathematical and Statistical Psychology, EarlyView.
Abstract The Bayes factor, the data‐based updating factor of the prior to posterior odds of two hypotheses, is a natural measure of statistical evidence for one hypothesis over the other. We show how Bayes factors can also be used for parameter estimation.
Samuel Pawel
wiley   +1 more source

Bayesian inference for dynamic Q matrices and attribute trajectories in hidden Markov diagnostic classification models

open access: yesBritish Journal of Mathematical and Statistical Psychology, EarlyView.
Abstract Hidden Markov diagnostic classification models capture how students' cognitive attributes evolve over time. This paper introduces a Bayesian Markov chain Monte Carlo algorithm for diagnostic classification models that jointly estimates time‐varying Q matrices, latent attributes, item parameters, attribute class proportions and transition ...
Chen‐Wei Liu
wiley   +1 more source

Latent Poisson count models for action count data from technology‐enhanced assessments

open access: yesBritish Journal of Mathematical and Statistical Psychology, EarlyView.
Abstract Recent advances in computerized assessments have enabled the use of innovative item formats (e.g., drag‐and‐drop, scenario‐based), necessitating a flexible model that can capture systematic influence of item types on action counts. In this study, we present a refinement scheme that can explicitly model common features of items and allows ...
Gregory Arbet, Hyeon‐Ah Kang
wiley   +1 more source

The natural history of periodontal disease—Part 2: In populations with access to dental care: The Studies of Health in Pomerania (SHIP)

open access: yesPeriodontology 2000, EarlyView., 2023
Abstract In this descriptive analysis of the 21‐year follow‐up data from the SHIP‐START cohort and the 7‐year follow‐up data from the SHIP‐TREND cohort, we report the progression of clinical attachment levels (CAL), age effects on CAL change, and a detailed description of CAL progression and remission. At baseline, 4307 and 4420 persons participated in
Thomas Kocher   +4 more
wiley   +1 more source

Besov Spaces on d-Sets Preserving Markov's Inequality and Polynomial Interpolation [Elektronisk resurs]

open access: yes, 1991
The purpose of this paper is to show that it is possible to de¯ne Besov spaces on d-sets, that preserve Markov's inequality by using local polynomial approximation of non-smooth spline type, which we obtain linearly from the functions of the Besov space.
Stenlund, Mikael
core  

Markov's conjecture on integral necklaces [PDF]

open access: yes
Altres ajuts: acords transformatius de la UABWe use the geometric reformulation of Markov's uniqueness conjecture in terms of the simple length spectrum of the modular torus to rewrite the conjecture in combinatorial terms by explicitly describing this ...
Fisac Camara, David
core   +1 more source

Approximating multidimensionality with asymmetric unidimensional IRT models

open access: yesBritish Journal of Mathematical and Statistical Psychology, EarlyView.
Abstract Unidimensional item response theory (IRT) models are widely used even in settings where assessment data exhibit subtle forms of multidimensionality. Recent empirical evidence suggests that when item difficulty is associated with dimensionality, asymmetric item characteristic curves (ICCs) emerge in the unidimensional approximation.
Xiangyi Liao   +5 more
wiley   +1 more source

Income inequality and subjective well-being: A cross-national study on the conditional effects of individual and national characteristics [PDF]

open access: yes, 2013
Contains fulltext : 116539.pdf (Publisher’s version ) (Open Access)In this study we raise the question how a nation’s income inequality affects subjective well-being.
Kraaykamp, G.L.M.   +7 more
core   +1 more source

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