Study suggests link between Leftism and schizophrenia

Leftists often follow simple rules and generalizations (e.g. "all men are equal") to an absurd degree -- in defiance of all commonsense. The study below shows that schizophrenics do that too

Now, scientists say they have found that the link between insanity and rationality may be more than a fanciful notion. In some situations-limited ones-they have found that schizophrenics have a reasoning advantage over normal people, stemming from their very lack of what we typically call common sense. Schizophrenia, a long-term mental disorder involving delusions and a derailed sense of reality, disrupts people's ability to see the "context" of events, a key part of common sense, said Emmanuel Mellet, one of the researchers. ...

Mellet, of the Universities of Caen and Paris-Descartes in Paris, and a group of colleagues presented a set of logic problems to 26 schizophrenics and an equal number of healthy patients. One type of problem in particular was designed to turn context into a trap; 90 percent of healthy people typically fail it, the researchers said....

There are many more right than wrong solutions possible for such a problem. In this case, an answer would be correct as long as the test-taker put anything but a red square on the left, and anything but a yellow circle on the right. Yet "sane" people usually give wrong answers. For the above problem, they would often put a red square on the left and a yellow circle on the right, quite compatible with the dictum they're supposed to break.

The error results from misplaced use of common sense, according to Mellet and colleagues.... The researchers reported that in their study, 58 percent of healthy participants failed such problems on all eight tries that they were given. Only 19 percent of schizophrenics suffered this failure rate. "We suggest that, thanks to their difficulty in processing contextual information, the schizophrenic patients ignored the elements that misled healthy participants," the scientists wrote....

Mellet and colleagues noted that similar findings came earlier this year from researchers at King's College London.... The finding supported the idea that "decision-making in people with schizophrenia is less influenced by common sense and more influenced by theoretical reason" than in normal people, the researchers wrote in a summary of their findings.

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