An astronomer says that a new sign, Ophiuchus, needs to be added to the zodiac. The change would shift the dates associated with each sign, which means that many people would have new signs. Temple psychologist Frank Farley said the changes could be profound for some people. "Self-concept and identity are huge in our lives as we develop," Farley noted. "You're born into a certain month and you're told that you have certain qualities because of it. This can certainly have an impact on self-concept."