cross-validation

n. a procedure used to assess the utility or stability of a statistical model. A data set is randomly divided into two subsets, the first of which (the derivation sample) is used to develop the model and the second of which (the cross-validation sample) is used to test it. In regression analysis, for example, the first subset would be analyzed in order to develop a regression equation, which would then be applied to the remaining subset to see how well it predicts the scores that were actually observed.

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Psychology term of the day

January 31st 2025

automatic speech

1. speech that erupts involuntarily, or without conscious control. It sometimes occurs as a consequence of dementia, Tourette’s syndrome, or highly emotional states. Automatic speech is not to be confused with synthesized or synthetic speech.

2. speech that is uttered with little or no conscious consideration of the spoken material, such as the days of the week, numbers, the alphabet, and other well-learned material.