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instrument drift

changes in an instrument, usually gradual and often predictable, that can threaten the validity of conclusions drawn from the data obtained with that instrument. An example would be the stretching of spring scales. Periodic recalibration of the measuring device helps minimize or rectify instrument drift. Also called instrument decay. See also observer drift.

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Psychology term of the day

January 15th 2025

lesion

lesion

n. any disruption of or damage to the normal structure or function of an organ or part of an organ due to injury, disease, or a surgical procedure. A lesion may be a wound, ulcer, tumor, cataract, or any other pathological change in tissue. See also temporary lesion.