These variables are those that are created by the researcher and are typically found in experimental studies.

Manipulated variables are those created by the researcher and typically found in experimental studies.

The researcher assigns their levels to observe the resulting effect.

Extraneous variables are unwanted influences the researcher tries to control, not create.

Dependent variables are measured outcomes rather than variables the researcher constructs.

Constant variables are held fixed and are not manipulated across conditions.

A manipulated variable is the active form of the independent variable in an experiment.