French Psychologist and Statistician Michel Gauquelin

French psychologist and statistician Michel Gauquelin claimed to have found correlations between some planetary positions and certain human traits such as vocations.

 Gauquelin's most widely known claim is known as the Mars effect, which is said to demonstrate a correlation between the planet Mars occupying certain positions in the sky more often at the birth of eminent sports champions than at the birth of ordinary people.

A similar claim is made by Richard Tarnas in his work Cosmos and Psyche, in which he explores correspondences between planetary alignments and historically significant events and individuals.

Since its original publication in 1955, the Mars effect has been the subject of critical studies and skeptical publications which aim to refute it,and of studies in fringe journals used to support or expand the original ideas. Gauquelin's research has not received mainstream scientific notice.