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stat.AP2026
How Common Are Estimated Latent-Distribution Departures From Normality? Evidence From 504 Item-Response Data Sets
JoonHo Lee
Item response models usually assume a normal trait distribution, yet little is known about how often fitted distributions in real studies differ substantially from normality or whi…
stat.AP2026
How Reliable Are Psychological Measurements? The Distribution of Marginal Reliability Across 889 Item-Response Datasets
JoonHo Lee
Nearly every quantitative study in psychology reports a reliability coefficient, so the field knows a great deal about the reliability that authors choose to publish. It knows much…