Philip Zimbardo, a Stanford University professor emeritus and colleagues used a nationally-representative sample of 4,000 adults and found that 20% qualified as heroes — they had helped during a dangerous emergency, taken a stand against injustice, or sacrificed for a stranger.. "Heroes are ordinary people," says Zimbardo, of San Francisco. "You become a hero by doing an extraordinary deed." In the study, both blacks and Hispanics were twice as likely as whites to have performed heroic deeds. Zimbardo says they want to do follow-up research on the reasons for the racial/ethnic differences, which he speculates could be attributed to "greater opportunities to respond" or "being discriminated against makes them have more compassion to others in need." http://www.usatoday.com/yourlife/mind-soul/doing-good/2011-01-14-heroes14_ST_N.htm People in bigs cities are also more likely to help. This reminds me of What Would You Do (ABC show). Most of the time it's the women while the wasp men have their tales between their legs.