their finger length!

The index- vs. ring finger ratio relates to the financial success of stock traders

Researchers at the University of Cambridge have discovered that the financial traders’ success may depend more on their biological traits than on their ability to make rational choices. Rather remarkable: the finger length of the London stock traders appear to be related to the amount of their earnings.

The researchers report that stock traders with a lower digit ratio (the ratio between the index finger and the ring finger) made an average of 679,680 pounds (or about $1 million U.S.), compared with 61,320 pounds ($90,956 U.S.) by those with a higher ratio, the report said. Those stock traders with a lower digit ratio of 0.93, on average, earned 10 times more than those with an average ratio of 0.988. Men typically have a ratio below 1, indicating their ring fingers are longer, Coates said. Women typically have a ratio of 1 or above.

Why? The explanation is actually very complex: testosterone, a steroid hormone, surges between the 9th and 18th week of gestation, exerting powerful organizing effects on the developing body and brain. According to both animal and human studies, these effects may include increased confidence, risk-preferences and search persistence, as well as heightened vigilance and quickened reaction times.


The following research programs describe some research results of related finger length ratio studies:

  • Finger length & agression
  • Lingerie sharpens the financial mind
  • What they say about men with long ring fingers
  • Finger length & sexual orientation:
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    4D, Manning's index

    Take a look at some of the international vocabulary + synonyms for the word ‘DIGIT RATIO‘:

    The ‘DIGIT RATIO’ vocabulary in English language includes the words:
    Finger ratio, 2D:4D ratio, 2nd to 4th ratio, 2th to 4th ratio, ring finger index finger ratio, finger length ratio, Manning’s index, Manning ratio, finger digit ratio, fingers ratio, finger size ratio

    ‘DIGIT RATIO’ synonyms in French language:
    Indice de Manning

    ‘DIGIT RATO’ synonyms in Spanish language are:
    Índice de Manning, ratio dedo de la mano

    ‘DIGIT RATIO’ synonyms in Porteguese language are:
    Manning índice, dedo rácio

    ‘DIGIT RATIO’ synonyms in German language:
    Finger-Verhältnis, Manning-Verhältnis

    ‘DIGIT RATIO’ synonyms in Dutch language:
    Vinger ratio, vingerlengte ratio, Manning ratio

    ‘PALMISTRY’ synonyms in Rusian language are:
    Соотношение палец