Caffeine perks up most coffee-lovers, but a new study shows a small dose of caffeine also increases their speed and accuracy for recognizing words with positive connotation. The research shows that ...

You wake up on a rainy Sunday morning, buzzing with energy. Your 14-year-old son is out playing football in the mud with his friends, so you jump in. From the window, your wife smiles and says, ...

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Everyday objects and people have an emotional meaning. A wool sock might have an emotional value if it was the last thing grandmother knitted before her death. The same applies to words. A stranger's ...