'The Oxford Handbook of Methods in Positive Psychology,' edited by Cornell's Anthony Ong, explores research methods for studying hope, laughter, resilience and other aspects of positive psychology.<br><br><a href='http://www.news.cornell.edu/stories/Dec06/positive.psychology.sl.html' target='_blank'>http://www.news.cornell.edu/stories/Dec06/positive.psychology.sl.html</a><br><br>