Regression

Generally, regression is related to moving backwards, and the opposite of progression. Specifically, it may refer to:


 * Regression (psychology), a defensive reaction to some unaccepted impulses
 * Past life regression, (psychology) a process claiming to retrieve memories of previous lives
 * Software regression, (software engineering) the appearance of a bug which was absent in a previous revision
 * Regression toward the mean, a common statistical phenomenon
 * Regression analysis, a technique used in statistics and econometrics, of which examples include linear regression and nonlinear regression.
 * Infinite regression, a problem in epistemology
 * Transgression (geology), a sea level rising phenomenon, the opposite of regression
 * Regression (medicine), a characteristic of diseases to express lighter symptoms without disappearing totally.

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