Sneaky Plame Poll? A Reality Check

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Earlier this week, ABC News released poll results concerning the federal investigation of the leak of CIA operative Valerie Plame’s identity.  The poll showed a sharp decline in the percentage of Americans who say that the White House is "fully cooperating" with the investigation and a large number who want Bush advisor Karl Rove to "lose his job . . . if investigators find that Rove leaked classified information." 

On Wednesday, Jay Cost (aka the Horserace Blogger) excoriated the poll in comments posted on RedState.org. MP is instinctively skeptical of ad hominem attacks wrapped in overheated rhetoric.  Cost’s piece — which labels the ABC poll variously as "patently absurd," "lousy or should I say tendentious," "done with the ostensible purpose of adding lighter fluid to a story," "screams in an unequivocal voice, ‘I am garbage, please debunk me!" — certainly seems to fall into that category.  However, Cost is a well-read student of political science.  While his conclusions about the ABC poll are questionable, his arguments are worthy of our consideration. 

Let’s begin with the first question ABC asked about the Plame investigation:

As you may know, a federal prosecutor is investigating whether someone in the White House may have broken the law by identifying an undercover CIA agent to some news reporters. One reporter has gone to jail rather than reveal her source. How closely are you following this issue – very closely, somewhat closely, not too closely or not closely at all?

Cost has three complaints about this question:  He doesn’t like the opening clause ("as you may know") because, he says, it is a "priming or cueing mechanism" intended to get the issue "to the front of people’s mind."  He is troubled by the amount of information provided and the apparent narrative it creates.  He argues that ABC "puts all [the] pieces together" in a way that "frames" them "into one sensible story."  He concludes:

ABC News is playing a subtle psychological trick with the public here — trying to make them respond that they are paying attention when they are not actually paying attention.

Let’s start with some explanation.  Pollsters frequently use the phrase "as you may know," to introduce unfamiliar information.  The phrase typically serves as both a transition from the previous question and a polite softener to avoid insulting knowledgeable respondents. An interview is a conversation, and this clause is a nice way of saying, "yes, I realize you may already know these details; no, I don’t think you’re stupid, so please bear with me."  MP grants that it is a bit odd to use the phrase in a probe of awareness, but if research exists to prove this phrase inflates awareness,  MP has not seen it. 

Second, Cost has a point when he warns that "informed" measures may exaggerate reported awareness (Cost refers to this as a "self selection" problem).  In this case, the pollsters have two ways to ask about awareness.  They can ask a purely open-ended (or "unaided") question: "What are some of the stories in the news you have been following lately?"  Or they can ask a closed-ended "aided" question (How closely are you following this issue?) that provides just enough detail to trigger the respondent’s memory. 

Both approaches have drawbacks.  The open-ended question may tend to underestimate true awareness, as some less verbal respondents may hold back opinions.  Others may have genuine memories that require a "trigger." (Imagine:  "Oh, the story about the reporter who went to jail?  Oh yes, I remember now…").  On the other hand, as Cost suggests, the social pressure of the interview can induce some respondents to want to seem better informed than they are.   Thus, unaided questions may slightly understate awareness while aided questions may slightly overstate it.  The truth usually falls somewhere in between.

Having said all this, MP tends to agree with Cost that the ABC awareness question includes an unusual amount of detail.  The issue is whether the combination of (a) the introductory phrase "as you may know," (b) the level of detail and (c) the supposed narrative "framing" produce a meaningfully higher level of reported awareness than a more bare-bones question.

Fortunately for us, the Pew Research Center included just such a question with nearly identical answer categories on a survey fielded on the very same dates (July 13-17).  The Pew question was:

Thinking again about news stories:  How closely have you followed reports that White House adviser Karl Rove may have leaked classified      information about a CIA agent very closely, fairly closely, not too closely, or not at all closely?

The question has no "as you may know" introductory clause and describes the issue in just 14 words (compared to 37 for ABC).  Yet the results are remarkably similar.  Pew shows 23% say they followed the story "very closely," 25% "somewhat closely" (for a total of 48%).  ABC shows 21% "very closely," 32% "fairly closely" (for a total of 53%).   The ABC survey gets a slightly lower percentage for "very closely," but a larger response in the second category (only the second difference appears to be statistically significant).  However, since ABC labels their second category "somewhat closely" compared to Pew’s "fairly closely," we cannot be certain what caused the slight difference — the answer category or the text before it. 

Regardless of the explanation, the differences in the results are trivial and, in MP’s view, not worth all of Cost’s huffing and puffing.    We would reach the same substantive conclusion about awareness of the Plame story from either poll’s results. 

But what about his s point that informed questions slightly overstate the true level of awareness? What do we make of that?  When analyzing these sorts of results, an astute survey consumer should always ask, "compared to what?"  In this case, how does awareness of the Plame leak compare to awareness of other issues.   The numbers become much more useful and meaningful as we put them into context. 

Once again, the Pew survey provides an answer:  At 23% very closely, awareness of the leak ranked well behind the terrorist bombings in London (48%), the war in Iraq (43%) and the recent Gulf Coast Hurricanes (38%).  It ranked at the same level as the O’Connor retirement (24%) and ahead of "the move by a Chinese firm to buy the American oil company Unocal (11%). 

In preparing this post, MP also stumbled on an amazing resource for these sorts of comparisons buried on the Pew Research Center website. Pew has been asking awareness questions about public issues using the same methodology for nearly twenty years.  On this page, they provide familiarity ratings (the "very closely" percentage) for over 1,100 different stories they have asked about from 1986 to 2004.  That’s a lot of context!

Cost has more complaints about the ABC survey that are also worth of some discussion, but my blogging time is up for today. I’ll come back to the rest in a subsequent post.

UPDATE (7/22):  MP wondered about why the Pew News Interest Index reports the percentage that say they follow an issue "very closely," so he emailed Scott Keeter, the director of Survey Resarch at Pew ans asked.  Here is Keeter’s answer: 

We tend to find that the “very closely” category is more sensitive to change and to differences across items. It is also probably less subject to social desirability pressures, since respondents have at least two other categories of attention to use if they feel the need to show they are not completely tuned out.

Also, Jay Cost responds in the comments section

Mark Blumenthal

Mark Blumenthal is the principal at MysteryPollster, LLC. With decades of experience in polling using traditional and innovative online methods, he is uniquely positioned to advise survey researchers, progressive organizations and candidates and the public at-large on how to adapt to polling’s ongoing reinvention. He was previously head of election polling at SurveyMonkey, senior polling editor for The Huffington Post, co-founder of Pollster.com and a long-time campaign consultant who conducted and analyzed political polls and focus groups for Democratic party candidates.