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Title: Olds and Milner (1954) discovered that rats would work very hard to obtain Post by: Kiaalyce1 on Jan 19, 2018 Olds and Milner (1954) discovered that rats would work very hard to obtain
a. food. b. water. c. social interaction with other rats. d. electrical stimulation of the brain. Title: Olds and Milner (1954) discovered that rats would work very hard to obtain Post by: ytrtry on Jan 19, 2018 d
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