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Girls can’t trade

GIRL-Day traderCoates, John M., Mark Gurnell and Aldo Rustichini (2009) Second-to-fourth digit ratio predicts success among high-frequency financial traders. Proceedings of the National Academy of Science, 106/2: 623-8.

Introduction

What does traders’ success on the market floor depend on? Earlier studies have shown that one’s level of testosterone did affect one’s daily results. Since “prenatal androgens have organizing effects on the developing brain, increasing its later sensitivity to […] testosterone”, it would make sense that prenatal androgens also have a structural effect on a trader’s results on the long term.A surrogate marker is commonly used to define one’s exposure to prenatal androgens: the second-to-fourth digit length ratio, noted 2D:4D. Such market has been found to predict professional athletes’ performance. In this paper, the autors test the hypothesis that a high exposure to prenatal androgens as indicated by 2D:4D would also predict traders’ long-term profit.

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The Same Winning Principles

In life, as in trading, the right mindset is crucial for success. You must be confident in your decisions because they are based on cause and effect, not on emotions or opinion. Negative people who are unsure of themselves are not successful in any field. You need faith in yourself and your methods to be able to persevere and not give up before reaching success.

• You can risk too much and lose it all in your business, life, marriage, friendships or family. You have to measure the potential cost of every action. One affair can cost you your marriage, just like one big trade with too much risk can cost you all your capital.

• In business there are certain methods which bring in customers and turn a profit, and others which cause a business to turn away customers and lose money. Trading is similar: methods which turn a consistent and long-term profit are essential for success.

• Having unrealistic expectations in a marriage, job, or business will lead to unhappiness and failure just like it will in trading. You have to set realistic expectations so
you do not get discouraged easily and quit in any of these areas. You have to be satisfied that the results are worth your effort over the long term. You need to understand what to expect before you begin a marriage, a job, a business, or trading. (more…)

Trading Principles

• In life, as in trading, the right mindset is crucial for success. You must be confident in your decisions because they are based on cause and effect, not on emotions or opinion. Negative people who are unsure of themselves are not successful in any field. You need faith in yourself and your methods to be able to persevere and not give up before reaching success.

• You can risk too much and lose it all in your business, life, marriage, friendships or family. You have to measure the potential cost of every action. One affair can cost you your marriage, just like one big trade with too much risk can cost you all your capital.

• In business there are certain methods which bring in customers and turn a profit, and others which cause a business to turn away customers and lose money. Trading is similar: methods which turn a consistent and long-term profit are essential for success.

• Having unrealistic expectations in a marriage, job, or business will lead to unhappiness and failure just like it will in trading. You have to set realistic expectations so
you do not get discouraged easily and quit in any of these areas. You have to be satisfied that the results are worth your effort over the long term. You need to understand what to expect before you begin a marriage, a job, a business, or trading.

• Those who succeed in all areas of life are the ones who can manage stress the best. The best way to manage stress is to increase what you can handle step by step so that you grow into new circumstances. Another way to manage stress is to avoid actions which get you into situations you are uncomfortable with.

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