Researchers measured people's physical and psychological responses while they used Facebook, performed a stressful task, or just relaxed, and found each of these activities appears to have a different effect on mood and arousal. Dr. Maurizio Mauri of the Institute of Human, Language and Environmental Sciences at IULM University in Milan, Italy, and colleagues, write about their findings in the peer-reviewed journal Cyberpsychology, Behavior, and Social Networking. A press statement on the study was released earlier this week...

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