CBS News Poll analysis by the CBS News Polling Unit: Sarah Dutton, Jennifer De Pinto, Fred Backus and Anthony Salvanto.
More than four out of five Americans say the United States has fundamentally changed since the attacks of September 11, 2001, with about one in four saying Americans are more cautious now, according to CBS News/New York Times poll released Thursday.
In the poll of 1,165 adults interviewed by telephone in late August, about 82 percent of those asked how the nation has changed, 23 percent of respondents said they are more cautious now than they were ahead of the attacks. And about 16 percent of those asked said they are more afraid now.
About a third of respondents said life returned to normal within a year, and more than three out of four asked said life was back to normal within five years.
The 9/11 attacks are still on the minds of many Americans and New Yorkers. 27% of the public thinks about it at least every week, as do 31% of New Yorkers.
Among close friends and family members of those killed that day, a majority says their lives returned mostly to normal within five years, but just three in ten have completely recovered emotionally from the attacks; 57% say they have recovered partially.
One in four Americans think the first responders who worked at the World Trade Center immediately after the attacks have not been treated fairly since the attacks; that rises to 58% among New Yorkers.
While most New Yorkers don't see a lot of progress at the Ground Zero site, three in four approve of what they have seen of the memorial there.
The New York City poll was conducted among a citywide random sample of 1,027 adults, interviewed by telephone August 9-15, 2011. The error due to sampling could be plus or minus three percentage points for results based on the complete sample. The error for subgroups is higher.
The friends and family poll was conducted among a nationwide sample of 246 adults who say a close friend or family member was killed on 9/11, interviewed by telephone August 11-23, 2011. 854 respondents fitting this description were identified in previous CBS News and CBS News/New York Times Polls conducted since late 2010 and were called back for this survey. The results for the 246 adults responding to the callback were weighted to demographic targets based on all of the 854 who were called. The error due to sampling for results based on the entire sample could be plus or minus six percentage points. The error for subgroups is higher.
All three samples included standard land-lines and cell phones. These poll releases conform to the Standards of Disclosure of the National Council on Public Polls.