Experimental Design

Independent Variable

General term for what is being tested/applied

Experimental treatment

A specific variation of the independent variable

Dependent Variable

General term for what is being measured

Experimental Constant

Factors kept consisten between the experimental group and the control group

Control Group

Those individuals/subjects/units NOT receiving a treatment

Experimental Unit

The entity to which the treatment is assigned

Replication

Having multiple experimental units per treatment

False replication

Mistaking multiple individuals within an experimental units for valid replication

Placebo

A “fake” treatment to eliminate the psychological variable

Double Blind

Neither the experimenter nor the subject knows the identity of the treatments