An independent variable (the intervention) is a condition implemented by the researcher or community to see if it will create change and improvement. This could be a program, method, system, or other action.  A dependent variables what may change as a result of the independent variable or intervention.  A dependent variable could be a behavior, outcome, or other condition.  A smoking cessation program, for example, is an independent variable that may change group members’ smoking behavior, the primary dependent variable.