10 tricks for better investing

Why do smart people do such stupid things with their money? Because, research shows, financial decisions are driven by feelings. Here's how to keep your impulses in check.

The past is not a prologue
On Wall Street, what goes up must come down, and what goes way up usually comes down with a sickening crunch. Never buy a stock or mutual fund just because it has been going up. Intelligent investors buy low and sell high, not the other way around.
Last updated January 02 2008: 8:29 AM ET

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