Before beginning an experiment, researchers use_________________ to define exactly how variables like "intelligence" or "happiness" will be measured
FIll in the blank with correct word.
Answer: operational definitions
Rationale: Operational definitions are statements that describe the procedures (or operations) and/or specific measures that are used to record observations. By carefully defining psychological terms such as "intelligence" or "happiness," everyone can understand exactly how these variables are being objectively measured.
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