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n. (pl. epiphenomena) a mere by-product of a process that has no effect on the process itself. The term is used most frequently to refer to mental events considered as products of brain processes. Thus, though mental events are real in some sense, they are not real in the same way that biological states and events are real, and not necessary to the explanation of mental events themselves. Epiphenomena are conceived of as having no causal power. See epiphenomenalism. —epiphenomenal adj.

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Psychology term of the day

February 27th 2024

empirically keyed test

empirically keyed test

an assessment in which answers are scored in such a way as to establish differences in responses among groups already known to differ. For example, on a test measuring problem solving, the correct alternative among the response choices would be the one preferred by members of a criterion group who were administered the test previously. See also empirical-criterion keying.