1. Bargh and Chartrand (1999), and Bargh and Williams (2006) sum up evidence that we engage in most of our social interactions without conscious awareness. Gigerenzer (2007) and Gigernezer and Goldstein (1996) emphasize the advantages of being guided by unconscious gut feelings. Gladwell (2005) calls this a “blink” and “thinking without thinking.”

2. Wilson (2002) makes a lucid comparison of the conscious and unconscious mental processes we use in sizing up people. He views the unconscious processes as rapid pattern detectors that have the advantage of great speed but are more prone to errors than the slower conscious processes that rethink these immediate impressions. Whereas the unconscious processes are concerned with ...

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