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random-effects model

any statistical procedure or experimental design that involves random effects. For example, a researcher wishing to investigate the effects of temperature on the frequency of aggressive behavior could not easily examine each temperature value and so instead examines a random sample of such values and their effects. Although random-effects models tend to be less powerful than fixed-effects models, they enable generalization to levels of the independent variable not actually employed in the study. Also called random model. Compare mixed-effects model.

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Psychology term of the day

October 15th 2024

alcohol intoxication delirium

alcohol intoxication delirium

in DSM–IV–TR and DSM–5, a reversible syndrome that develops over a short period (usually hours to days) following heavy alcohol consumption. Disturbance of consciousness (e.g., reduced ability to focus, sustain, or shift attention) is accompanied by changes in cognition (e.g., memory deficit, disorientation, or language disturbance) in excess of those usually associated with alcohol intoxication. See also substance intoxication delirium.