A Series of Experiments Conducted in the 1960s Used Laboratory

question 42

Multiple Choice

A series of experiments conducted in the 1960s used laboratory animals that were given intravenous catheters connected to motorized syringes and controlling equipment so that by pressing a lever would produce a single brief drug injection. Which describes the animal(s) that were used?

• A) Rats
• B) Monkeys and rats
• C) Monkeys
• D) Pigeons and mice

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