Are personality tests any more accurate than astrology?
A lovely study I just came across examined this question: Science Versus the Stars. The researchers took 52 college students and got them to complete a standard NEO personality questionnaire. They also had to state the date, time and place of their birth.
Three weeks later, the participants were then given two personality summaries - one based on the personality tests, and one on their astrological chart generated with a computer program.
The trick was that everyone also got a pair of bogus summaries, one of each kind. These were simply someone else's results, picked at random from the other 51 volunteers. They weren't told which were the fakes and which were real - they had to work it out, based on which one matched them best.
The results showed that the subjects were no better than guessing when trying to tell ...