People have little idea, by and large, of the investment world. They are convinced they have an advantage.

People tend to assess the relative importance of issues by the ease with which they are retrieved from memory—and this is largely determined by the extent of coverage in the media. Frequently mentioned topics populate the mind even as others slip away from awareness. In turn, what the media choose to report corresponds to their view of what is currently on the public’s mind. It is no accident that authoritarian regimes exert substantial pressure on independent media. Because public interest is most easily aroused by dramatic events and by celebrities, media feeding frenzies are common

A large portion of the weekend effects is explained by differences in the amount of time spent with friends or family between weekends and weekdays.

To know whether you can trust a particular intuitive judgment, there are two questions you should ask: Is the environment in which the judgment is made sufficiently regular to enable predictions from the available evidence? The answer is yes for diagnosticians, no for stock pickers. Do the professionals have an adequate opportunity to learn the cues and the regularities? The answer here depends on the professionals' experience and on the quality and speed with which they discover their mistakes.

So your emotional state really has a lot to do with what you're thinking about and what you're paying attention to.

People who are cognitively busy are also more likely to make selfish choices, use sexist language, and make superficial judgments in social situations.

Hindsight bias makes surprises vanish.