learning curve

a graphic representation of the course of learning of an individual or a group. A measure of performance (e.g., gains, errors) is plotted along the vertical axis; the horizontal axis plots trials or time. Also called acquisition curve. See negative acceleration; positive acceleration.

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Psychology term of the day

January 31st 2025

coefficient of agreement

a numerical index that reflects the degree of agreement among a set of raters, judges, or instruments as to which of several categories a case belongs. Coefficients of agreement, such as Cohen’s kappa, are often corrected for chance agreement. Also called agreement coefficient.