personal equation

noun

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

Origin

1835-45

Examples from the web for personal equation

In each instance the influence of the personal equation becomes recognizable.
Where and when are obviously important factors in that personal equation.
The personal equation was as important in this case as in any other.
It is still a story of the chase, but the personal equation has been removed.
Two forms of personal equation apparatus for transit observations.
It does go a few steps beyond the specifications and reduces the personal equation to some extent.
As to this matter of the personal equation the joint committee is hopeful.

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

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.