overdispersion

n. in categorical data analysis, a situation in which obtained observations display more variation (dispersion) than is predicted by a model. Overdispersion distorts standard error and confidence interval estimates and is often associated with outliers or model misspecification.

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Psychology term of the day

November 23rd 2024

risk factor

risk factor

a clearly defined behavior or constitutional (e.g., genetic), psychological, environmental, or other characteristic that is associated with an increased possibility or likelihood that a disease or disorder will subsequently develop in an individual. Compare protective factor.