If you already have an opinion about something before you've even tried to figure it out, chances are you'll over-value information that confirms that opinion.
Think about what kinds of information you would expect to find to support alternative outcomes.
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Most decision-making errors boil down to:
The “fundamental attribution error,” is when we excuse our own mistakes but blame other people for theirs.
Give other people the chance to explain themselves before judging their behavior.
When we’re evaluating an option, we often fixate on the first piece of information we have about it.
Decide in advance what outcome you have in mind.
“Sunk costs” are money, time, or effort we’ve already spent and can’t get back.
Cultivate a habit of admitting your mistakes. Ask yourself: If the past didn’t exist and you’re just starting out now, what would you do?”
Sunk-cost fallacy. Present yourself with the new options at hand -- without considering the sunk cost.
Narrow framing. When we're in situations that will repeat themselves over time, we should take a step back and play a game of averages.
Emotionally driven decisions. Hold off on making important decisions when you are in a bad mood.
Confirmation bias. Always look for conflicting evidence and then make judgments based on more well-rounded information.
Ego depletion. When we're drained, physically or mentally, we're less likely to think critically.
The halo effect says that once we like somebody, we're more likely to look for his or her positive characteristics and avoid the negative ones. Realize your biases toward certain people and do what you can to eliminate them.
We are more likely to listen to success stories than failures. The result is that we often over-estimate the likelihood of success in risky ventures.
This is when we mistakenly think that eventually, our luck has to change for the better.
Somehow, we find it impossible to accept bad results and give up—we often insist on keeping at it until we get positive results, regardless of what the odds of that happening actually are.