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Comparing Rasch and Classical Equating Methods for Small Samples
Statistical Methods and Data Analysis

Comparing Rasch and Classical Equating Methods for Small Samples

Babcock and Hodge (2020) address a significant challenge in educational measurement: accurately equating exam scores when sample sizes are limited. Their study evaluates the performance of Rasch and classical equating methods, particularly for credentialing exams with small cohorts, and introduces data pooling as a potential solution. Background Equating ensures fairness …

Examining the Effect of Estimation Methods on SEM Fit Indices
Statistical Methods and Data Analysis

Examining the Effect of Estimation Methods on SEM Fit Indices

The study by Shi and Maydeu-Olivares (2020) analyzes how different estimation methods influence key fit indices in Structural Equation Modeling (SEM). By focusing on methods such as Maximum Likelihood (ML), Unweighted Least Squares (ULS), and Diagonally Weighted Least Squares (DWLS), the authors explore the nuances of model fit across various …

White Matter Microstructure and Cognitive Performance
Cognitive Neuroscience and Brain Function

White Matter Microstructure and Cognitive Performance

Holleran et al. (2020) investigated the relationship between white matter microstructure and cognitive ability in patients with schizophrenia and healthy individuals. Drawing on data from the ENIGMA Consortium, the study analyzed how global and regional white matter connectivity relates to cognitive performance, offering a comprehensive perspective on the structural underpinnings …

Impact of Early-Life Exposure to Endocrine-Disrupting Chemicals (EDCs) on Neurodevelopment
Environmental and Socioeconomic Influences on Cognition

Early-Life Exposure to Endocrine-Disrupting Chemicals (EDCs) on Neurodevelopment

Gaylord et al. (2020) conducted an extensive analysis of the neurodevelopmental disabilities linked to early-life exposure to endocrine-disrupting chemicals (EDCs) in the United States between 2001 and 2016. The study also examined the economic costs of these exposures, emphasizing the significance of effective public health interventions. Background Endocrine-disrupting chemicals are …