Dogs Can Be Optimistic Or Pessimistic Just Like People, Study Shows

September 23, 2014 2:44 PM

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"This research is exciting because it measures positive and negative emotional states in dogs objectively and non-invasively," study leader Dr. Melissa J. Starling, an animal behaviorist at the university, said in a written statement. "It offers researchers and dog owners an insight into the outlook of dogs and how that changes."

For their study, the researchers trained dogs to respond to two different tones, each an octave apart. One tone accompanied a reward of a half-bowl of lactose-free milk, while the second tone resulted in a less-alluring half bowl of water. Once the dogs learned to associate each tone with its reward...

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