Independent Variable

Definition

The independent variable is the variable that is intentionally manipulated or changed by the researcher in an experiment. It is the cause or input in a study.

Analogy

Think of the independent variable as the remote control for a TV. Just like you can change channels or adjust the volume using the remote control, researchers can manipulate and control the independent variable to see how it affects the outcome.

Related terms

Control Variable: A control variable is a factor that remains constant throughout an experiment to ensure that any observed effects are due to changes in the independent variable.

Experimental Group: The experimental group consists of participants who are exposed to or receive a specific level of the independent variable being studied.

Treatment: In an experiment, treatment refers to any manipulation or condition applied to participants in order to observe its effect on the dependent variable.