Group 3 received a classic disinformation message (the Oregon Petition) arguing that over 31,000 American scientists have signed a petition claiming that "there is no convincing scientific evidence of human-caused global warming". This reduced participant's estimates of the consensus by about 9 percentage points.
In late August, Glenn Beck, of Fox News, and his followers online mounted an assault on Van Jones, a White House environmental adviser, who, in 2004, had signed a petition claiming that the Bush Administration "may indeed have allowed 9/11 to happen, perhaps as a pretext for war".
For a country of our affluence, that, quite frankly, is a disgrace". In March last year, Anglican clergymen, including the archbishops of Canterbury and York, accused Duncan Smith of ignoring the concerns of ordinary people when they signed a letter claiming that capping benefit rises would have a "deeply disproportionate" effect on children.
After he left his siblings out of his will, some of them wrote and signed a letter claiming the will to be a fake and calling on executors of the estate to resign in 2012.
In November, staff at the television network TVB were punished after around 80 members of the news department signed a petition claiming management censored their report showing police beating protester Ken Tsang.
After the fight, 225 Chinese students signed a petition claiming their non-Asian schoolmates often harass them on campus.
Jeremy Mayfield's comments in several interviews came after his stepmother signed an affidavit claiming she witnessed him taking methamphetamine at least 30 times over seven years.
At a news conference on Tuesday, the Almonors, flanked by lawyers, family members and retired black police officers, signed a notice of claim against the city, the Police Department and the arresting officers, asserting that their civil rights had been violated.
We would not have signed a letter that claimed otherwise.
More than 44,000 people signed a petition that claimed to have been started by "concerned United Nations staff members" which called on the UN secretary general, Ban Ki-moon, to appoint a non-fictional woman to the role.
