In recent months not only Democrats but many other Americans as well have become increasingly dismayed by the growing irrationality and even downright delusional thinking that appears to be taking hold among many conservatives and Republicans.
The most recent evidence of this trend was a September poll of New Jersey voters that not only showed 33% of self-described conservatives accepting the notion that Obama was not born in the United States but 18% also agreeing with the statement that he is “the Anti-Christ.” The appearance of this view in a northern industrial state like New Jersey indicates that these kinds of beliefs can no longer be dismissed as geographic peculiarities of rural areas or the South rather than as a significant component of modern American conservatism.
Despite the concern, however, there has actually been little serious discussion of how opinion polls might be used to track the growth of genuinely delusional thinking in American politics. It is true that ever since many commentators began using the number of people who accept the “Birther” narrative – that Obama was not actually born in the U.S. – as a shorthand measure of conservative and Republican irrationality there have been similar attempts to demonstrate that an equal number of Democrats believe false “Truther” narratives about the 9/11 attacks. As we will see, however, these discussions have all been based on survey questions that do not accurately distinguish between genuinely delusional beliefs and non-delusional ones and, in the specific case of the “Truther” narratives, also ignore key polling data that does not support the “one extreme equals the other” point of view. As a result, these discussions are useful primarily as ammunition for partisan political debates and not as a basis for serious social analysis.
In contrast, in order to use public opinion polling to seriously attempt to track the growth of delusional thinking in American politics we need to first consider two questions.
1. Can peoples’ responses to survey questions be used to detect psychologically disordered thinking?
2. Can survey questions reliably distinguish between views that are so irrational as to be genuinely “delusional” in a clinical sense and those that are merely extreme or implausible?
The answer to the first question is actually not difficult to determine. In psychology there are a number of “self-report” questionnaires that use people’s response to written questions to gauge characteristics like paranoia, hypochondria and other psychological disorders. The Minnesota Multiphasic Personality Inventory (MMPI), for example, is widely used and – although far, far from perfect – has been found to be sufficiently predictive for use in a variety of screening and assessment settings.
The key to answering the second question, on the other hand, is to carefully focus attention on beliefs that are genuinely “delusional” — a term which is defined as “a rigid system of beliefs with which a person is preoccupied and to which the person firmly holds, despite the logical absurdity of the beliefs and a lack of supporting evidence”
The current version of the DSM-IV — the Diagnostic and Statistical Manual of Mental Disorders defines a Delusional Disorder as follows:
“A false belief based on incorrect inference about external reality that is firmly sustained despite what almost everybody else believes and despite what constitutes incontrovertible and obvious proof or evidence to the contrary.”
In diagnosing a delusional disorder there are three generally used criteria:
•certainty (held with absolute conviction)
•incorrigibility (not changeable by compelling counterargument or proof to the contrary)
•impossibility or falsity of content (implausible, bizarre or patently untrue)
Obviously there is often not 100% agreement among clinicians in diagnosing a particular delusional disorder, but there is generally a commanding consensus.
With this framework in mind, let’s examine both the “Birther” and the “Truther” narratives: