Deception in the US Presidential Debates

You might be wondering if I’m going to be posting scores for the levels of persona deception in this evening’s presidential debate (and subsequent ones).

There’s a problem: the deception model relies on the rates at which certain kinds of words occur. In question-and-answer situations such as interrogations, and debates, the language of the questions drives, to some extent, the language of the answer. So we can’t get a clean read on the level of persona deception of the respondent without factoring out that part of the response that doesn’t come, so to speak, from inside the respondent’s head.

We can’t do this factoring yet, although we are making some progress. One of my students has developed a technique for “correcting” the word frequencies in an answer to allow for the prompting effects of words in the question. For example, using “you” in a question tends, not surprisingly, to alter the rates of pronouns such as “I” in the answer. The problem is complicated by the fact that the effects of the prompting don’t seem to be independent of the mental state of the respondent, something that others have noticed in forensic settings.

So the bottom line is that the deception model, thought effective in freeform situations such as speeches, remains problematic in interrogatory settings. The effect of a question seems to die away about 50 words into an answer, so there will be opportunities to look at levels of persona deception in longer responses, of which there will probably not be a shortage.

Advertisements

0 Responses to “Deception in the US Presidential Debates”



  1. Leave a Comment

Leave a Reply

Please log in using one of these methods to post your comment:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s





%d bloggers like this: