This study failed to replicate the findings of Mayoet al.(1978), that individuals' astrological Sun signs are associated with extraversion and neuroticism scores on the EPI. These negative findings could have been due to the controls employed here for the subjects' belief in astrology and for subject self‐selection. Additional controls for the effects of knowledge of Sun sign on self‐reports revealed that the zodiacal locations of the Moon, Mercury, Venus and Mars are also not associated with reported extraversion and neurotic