Research by Princeton psychologist John Darley, who pioneered the study of the bystander effect, has found no clear personality profile distinguishes the upstanders from the bystanders.

CNN: What made London Samaritan so brave

If a Web visitor clicks on a link in the game to a Wyndham sweepstakes, the image and the copy are tailored to the player's personality profile.

FORBES: Magazine Article

The same day, sister network Fox News announced it would add a similarly high-profile personality as a contributor to its lineup: former Alaska governor and GOP darling Sarah Palin.

FORBES: Entertainment

He says he does not like seeing his private life in the newspapers, but then embarks on affairs with a high-profile television personality and an office secretary.

BBC: SPORT | Football | Internationals | How did Eriksson survive?

My cover letters needed "personality, " and my profile needed padding.

WSJ: Extra Work for Little Pay

Casper's quiet personality contributed to his low profile.

WSJ: Billy Casper, Standing in the Shadow of Legends | Golf Journal

As you might imagine, becoming the dominant player in electronics component manufacturing in China -- particularly at a time when competition has never been fiercer -- takes a particular personality type, and after reading BusinessWeek's profile of Foxconn founder Terry Gou, you get a very real sense that the dude meets the criteria.

ENGADGET: BusinessWeek profiles Foxconn founder (and veritable pitbull) Terry Gou