
by Michel Gauquelin, Françoise Gauquelin · Tapa blanda · ISBN 9782501007900

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«15 tests pour connaître les autres» is the psychology guide by Michel and Françoise Gauquelin, published by Marabout in paperback (288 pages, in French).
The book presents fifteen tests to train the ability to observe and understand others. Through everyday gestures, attitudes and behaviors, it teaches how to detect character and personality traits, and proposes games and questionnaires to discover talents and aptitudes, in order to communicate better.
This title is part of the Guide Marabout collection (GM No. 15) and was originally published in 1986.
For readers interested in practical psychology, self-knowledge and improving personal relationships through observation and tests.

The Mars effect is a purported statistical correlation between athletic eminence and the position of the planet Mars relative to the horizon at time and place of birth. This controversial finding was first reported by the French psychologist and "neo-astrologer" Michel Gauquelin. In his book L'influence des astres, Gauquelin suggested that a statistically significant number of sports champions were born just after the planet Mars rises or culminates. He also divided the plane of the ecliptic into twelve sectors, identifying two "key" sectors of statistical significance.
