BPS Research Digest: An afternoon nap tunes out negative emotions, tunes in positive ones bps-research-digest.blogspot.com/2011/03/afternoon-nap-tunes-out-negative.html?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+BpsResearchDigest+%28BPS+Research+Digest%29&utm_content=Google+Reader
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