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Cognitive Biases That Affect Traders

cognitive_psychology_irrational
Humans have weaknesses that hamper their trading capabilities. Many were developed in ancient times and were important for survival. I will enumerate the most important:
1) Loss Aversion: the strong tendency for people to prefer avoiding losses over acquiring gains

2) Sunk Cost Effect: The tendency to treat money that already has been committed or spent as more valuable than money that may be spent in the future

3) Disposition Effect: the tendency for people to lock in gains and ride losses

4) Outcome Bias: The tendency to judge a decision by its outcome rather then by the quality of the decision at the time it was made

5) Recency Bias: the tendency to weigh recent data or experience more than earlier data or experience

6) Anchoring: the tendency to rely too heavily, or anchor, on readily available information (more…)

During and After the Trade

1. What’s your game plan if it goes against you and threatens your survival?

2. Will you be able to get out? Did you take that into account in your workout?

3. More typically, what will you do if it goes way against you and then meanders back to give you a breakeven? Or if it immediately goes for you or aginst you?

4. Would you be willing to take a ½% profit if you get it in the first 10 minutes?

5. Did you test whether taking small opportunistic profits turns a winning system into a bad one?

6. How will unexpected cardinal events affect you like the “regrettably,” or the pre-annnouncement of something you expected for the next open? And what happens if you’re trading an individual stock and the market goes up or down a few percent during the day, or what’s the impact of a related move in oil or interest rates?

7. Are you sure that you have to monitor the trade during the day? If you’re using stops, then you probably don’t have to but then your position size would have to be reduced so much that your chances of a reasonable profit taking account of vig are close to zero. If you’re using 10% of your capital on a trade, they you’ll have to monitor it for survival. But, but, but. Are you sure you won’t be called away by phone calls, or the others?

8. Are you at equilibrium in your personal life? You’re not as talented as Tiger Woods, and you probably won’t be able to handle distressed calls for money or leaks on the home front. Are you sure that if you’re losing you won’t get hit on the head with a 7-iron, or berated until you have to give up at the worst possible time?

9. After the trade did you learn anything from the trade?

10. Are you organized sufficiently to have a record of all your trades for your accounting and learning?

11. Should you modify your existing systems based on it?

12. How does recency and frequency and value affect your future?

13. Did you fit your after activities to your mojo?

14. If you made a good profit, did you take some capital out of the fray for a rainy day?

15. Have you learned to say “fair” whenevever anyone asks you how you’re doing and are you sure that you don’t spend a fortune after a good trade, and dissipate your profits with non-economic activities?

16. Is there a better use for your time than monitoring the ticks or the market every minute of the day if you do, and if you don’t, do those who do so and have much faster and better equipment than you have an insurmountable advantage against you?

My Checklist :During and After the Trade

checklist-1. What’s your game plan if it goes against you and threatens your survival?

2. Will you be able to get out? Did you take that into account in your workout?

3. More typically, what will you do if it goes way against you and then meanders back to give you a breakeven? Or if it immediately goes for you or aginst you?

4. Would you be willing to take a ½% profit if you get it in the first 10 minutes?

5. Did you test whether taking small opportunistic profits turns a winning system into a bad one?

6. How will unexpected cardinal events affect you like the “regrettably,” or the pre-annnouncement of something you expected for the next open? And what happens if you’re trading an individual stock and the market goes up or down a few percent during the day, or what’s the impact of a related move in oil or interest rates?

7. Are you sure that you have to monitor the trade during the day? If you’re using stops, then you probably don’t have to but then your position size would have to be reduced so much that your chances of a reasonable profit taking account of vig are close to zero. If you’re using 10% of your capital on a trade, they you’ll have to monitor it for survival. But, but, but. Are you sure you won’t be called away by phone calls, or the others? (more…)