THIS STORY HAS BEEN FORMATTED FOR EASY PRINTING

How do you see this glass?

Most people answer 'half full,' and scientists are now exploring why optimism is so prevalent

By Emily Anthes
Globe Correspondent / June 2, 2008

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This campaign season, Barack Obama has branded himself as the candidate of hope. And many voters and pundits have swooned, enchanted by his message of positivity and his faith that better times are ahead for the nation and its citizens. (Full article: 972 words)

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