A baseline measure, also known as “the before measurement” is a piece of data that has been taken before any action has been applied to such data. A simple example is the current weight of a person preparing to go on a diet. The difference between the baseline measurement and “the after measurement” on the weight chart visually presents the effectiveness of the individual’s diet regimen. Baseline measures are often employed in various kinds of psychological studies and behavioral therapies to monitor improvement and differences.