Ha!

New Scientist reports today that happiness isn't necessarily good for you. Psychologist Joe Forgas at the University of New South Wales in Sydney, Australia, suggests that happiness's negative effects all stem from a cheery mood's tendency to lull you into feeling secure. This makes you look inwards and behave both more selfishly and more carelessly.

To probe the effect of happiness on selfishness, Forgas and his colleague Hui Bing Tan put 45 students into good or bad moods by giving them positive or negative feedback on a "cognitive test" that they had taken. In fact the test was a fake and did not measure cognition, while the feedback bore no relation to their performance.

In related news, the mutilated bodies of two Australian psychologists were found inside a test centre, recently. They had been smothered with large numbers of test score sheets.  Police want to speak to a number of happy-looking students seen afterwards.