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Refining Reliability with Attenuation-Corrected Estimators
Statistical Methods and Data Analysis

Refining Reliability with Attenuation-Corrected Estimators

Jari Metsämuuronen’s (2022) article introduces a significant advancement in how reliability is estimated within psychological assessments. The study critiques traditional methods for their tendency to yield deflated results and proposes new attenuation-corrected estimators to address these limitations. This review examines the article’s contributions and its implications for improving measurement precision. …

Improving Norm Score Quality with Regression-Based Continuous Norming
Psychological Measurement and Testing

How Continuous Norming Outperforms Conventional Methods

Lenhard and Lenhard (2021) investigate how regression-based continuous norming can enhance the quality of norm scores in psychometric testing. Their study compares semiparametric continuous norming (SPCN) with conventional methods, evaluating performance across a wide range of simulated test conditions and sample sizes. Background Norm scores are crucial in psychological and …

Assessing Missing Data Handling Methods in Sparse Educational Datasets
Statistical Methods and Data Analysis

Assessing Missing Data Handling Methods in Sparse Educational Datasets

The study by Xiao and Bulut (2020) evaluates how different methods for handling missing data perform when estimating ability parameters from sparse datasets. Using two Monte Carlo simulations, the research highlights the strengths and limitations of four approaches, providing valuable insights for researchers and practitioners in educational and psychological measurement. …

Evaluating Short-Form IQ Estimations for the WISC-V
Psychological Measurement and Testing

Evaluating Short-Form IQ Estimations for the WISC-V

Short-form (SF) IQ estimations are often used in clinical settings to provide efficient assessments of intelligence without administering the full test. Lace et al. (2022) examined the effectiveness of various five- and four-subtest combinations for estimating full-scale IQ (FSIQ) on the Wechsler Intelligence Scale for Children-Fifth Edition (WISC-V). Their findings …

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 …