The point is not who has the misperceptions, or why, or what they watch, or who they vote for, or whether they wipe their butts with their left or right hands.

The point is how "misperceptions" are defined by the authors in the first place. While some misperceptions in the paper can be traced to objective facts (for example, it is factual that there was no use of WMD by Iraqi troops during the war, and that public opinion around the world was anti-war), others are simply defined as positions that disagree with the positions of NPR and PBS. (evidence of Iraqi links to terror and/or al Qaeda, evidence of WMD in Iraq).

If one defines the positions of NPR/PBS as "correct" at the outset, it's really not surprising that those who primarily listen to these outlets would get graded as having fewer "misperceptions."

As an aside, note the graph on page 3 showing the public view of Iraq/Al Qaeda connections when the respondents were asked more detailed questions. The chart shows a more realistic perception than the 70 percent quoted as believing in a direct link between Iraq and 9/11. The middle two positions (65 percent total) are reasonable ones, and the 30 percent position is factually confirmed.