Mars effect Natal astrology

the initial mars effect finding, showing relative frequency of diurnal position of mars in birth charts (n = 570) of eminent athletes (red solid line) compared expected results [after michel gauquelin 1955]

in 1955, astrologer, , psychologist michel gauquelin stated although had failed find evidence support such indicators zodiacal signs , planetary aspects in astrology, had found positive correlations between diurnal positions of of planets , success in professions (such doctors, scientists, athletes, actors, writers, painters, etc.) astrology traditionally associates planets. best-known of gauquelin s findings based on positions of mars in natal charts of successful athletes , became known mars effect . study conducted 7 french scientists attempted replicate claim, found no statistical evidence. attributed effect selective bias on gauquelin s part, accusing him of attempting persuade them add or delete names study.

geoffrey dean has suggested effect may caused self-reporting of birth dates parents rather issue study gauquelin. suggestion small subset of parents may have had changed birth times consistent better astrological charts related profession. sample group taken time belief in astrology more common. gauquelin had failed find mars effect in more recent populations, nurse or doctor recorded birth information. number of births under astrologically undesirable conditions lower, indicating more evidence parents choose dates , times suit beliefs.