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Independent Variable (IV)
What the researcher changes.
Example: Whether the client gets exposure therapy or not.
Dependent Variable (DV)
What is measured.
Example: Anxiety level around needles.
Experimental Group
Gets the treatment.
Example: People who did exposure therapy.
Control Group
Doesn’t get the treatment.
Example: People who did NOT do exposure therapy.
Random Allocation
Randomly placing people into groups.
Example: Names drawn from a hat.
Hypothesis
A testable prediction.
Example: “Exposure therapy lowers anxiety.”