alternate-forms reliability

a measure of the consistency and freedom from error of a test, as indicated by a correlation coefficient obtained from responses to two or more alternate forms of the test. Also called comparable-forms reliability; equivalent-forms reliability; parallel-forms reliability.

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Psychology term of the day

December 21st 2024

self-selection bias

a type of bias that can arise when study participants choose their own treatment conditions, rather than being randomly assigned. In such cases, it is impossible to state unambiguously that a study result is due to the treatment condition and not to the preexisting characteristics of those individuals who chose to be in this condition. Also called self-selection effect. See also sampling bias.