personal equation

noun

the tendency to personal bias that accounts for variation in interpretation or approach and for which allowance must be made.

Origin of personal equation

First recorded in 1835–45

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British Dictionary definitions for personal equation

personal equation

noun

the variation or error in observation or judgment caused by individual characteristics

the allowance made for such variation

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

personal equation in Medicine

personal equation

n.

A constant but slight error in judgment, perceptual response, or action that is specific to an individual and is so constant that it is usually possible to allow for it when assessing that person's statements or conclusions, thus arriving at approximate exactness.