Positive Illusions and Depressive Realism

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The Norwegian philosopher Peter Wessel Zapffe argued, essentially, that the human capacities for reason and self-awareness break with nature, giving us more than we, as a part of nature, can carry. So, as not to go mad, "most people learn to save themselves by artificially limiting the content of consciousness."

People not only limit the content of consciousness but also fill it with less than the truth. In particular, most people think more highly of themselves than is warranted: They have an inflated sense of their qualities and abilities, an illusion of control over things that are mostly beyond them, and a misplaced optimism about their outcomes and prospects.

For example, most people claim to compare favorably to the average road user, citizen, parent... which is, of course, mathematically impossible, since not everyone can be above average. A couple on the verge of tying the knot is likely to overestimate the odds of having a carefree honeymoon or a gifted child, while underestimating the odds of having a miscarriage, falling ill, or getting divorced.

The concept of positive illusions first appeared in 1988, in a paper by Shelley Taylor and Jonathon Brown entitled, "Illusion and well-being: A social psychological perspective on mental health." Still today, it is commonly believed that mental health corresponds to accurate perceptions of the self, the other, and the world, but in their paper, Taylor and Brown argued that the evidence suggests otherwise and that positive illusions are characteristic of normal human thought.

Positive illusions are helpful in so far as they enable us to take risks, invest in the future, and fend off despair and depression. After all, how many people would get married if they had any real sense of what awaited them? But in the longer term, the poor perspective and judgment that come from undue self-regard and false hope are likely to lead to disappointment and failure, to say nothing of the inhibitions and emotional disturbances (such as anger, anxiety, and so on) that can derive or descend from a defended position.

Positive illusions tend to be more common, and more marked, in the West. In East Asian cultures, for example, people are less vested in themselves and more vested in their community and society, and tend, if anything, to self-effacement rather than self-enhancement.

Positive illusions are also more prevalent in unskilled people, possibly because highly skilled people tend to assume, albeit falsely, that those around them enjoy similar levels of insight and competence. This Dunning-Kruger effect, as it has been called, is neatly encapsulated in a short fragment from the introduction to Darwin's Descent of Man: "…ignorance more frequently begets confidence than does knowledge…" And, of course, it may also be that, compared to highly skilled people, unskilled people are more reliant on positive illusions for their self-esteem and broader mental health.

Depressive realism

Just as it is commonly believed that mental health corresponds to accurate perceptions of the self, the other, and the world, so it is commonly believed that depression results in, or from, distorted thinking.

"Cognitive distortion" is a concept from cognitive-behavioral therapy (CBT), developed by psychiatrist Aaron Beck in the 1960s and routinely used in the treatment of depression and other mental disorders. Cognitive distortion involves interpreting events and situations so that they conform to and reinforce our outlook or frame of mind, typically on the basis of very scant or partial evidence, or even no evidence at all.

Common cognitive distortions in depression include selective abstraction, personalization, and catastrophic thinking:

• Selective abstraction is to focus on a single negative event or condition to the exclusion of other, more positive ones, for example: "My partner didn't call me yesterday. He must hate me."
• Personalization is to relate independent events to oneself, for example: "The nurse is leaving her job because she's fed up with me…"
• Catastrophic thinking is to exaggerate the negative consequences of an event or situation, for example: "The pain in my knee is only going to get worse. When I'm reduced to a wheelchair, I won't be able to go to work and pay the mortgage. So I'll end up losing my house and dying in the street."

However, the scientific literature suggests that, despite their propensity for such cognitive distortions, many people with depressed mood can also have more accurate judgment about the outcome of so-called contingent events (events that may or may not occur) and a more realistic perception of their role, abilities, and limitations—a phenomenon that is sometimes, and controversially, referred to as "depressive realism."

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The concept of depressive realism originated in 1979, in a paper entitled "Judgment of contingency in depressed and non-depressed students: sadder but wiser?" On the basis of their findings, the authors, Lauren Alloy and Lyn Abramson, argued that people with depression make more realistic inferences than "normal" people, who are handicapped by their positive illusions. On the face of it, this suggests that people with depression are able to see the world more clearly for what it is, while normal people are only normal in so far as they are deceiving or deluding themselves.

This is a seductive proposition for someone like me, who has long been arguing that depression can be good for us—for example, in my book, The Meaning of Madness. But here's the rub: People with depression are pessimistic even in situations in which pessimism is unwarranted, suggesting that rather than being more realistic, their thinking is merely "differently biased," and just as rigid and distorted as that of normal people with their positive illusions.

Wisdom, it seems, consists of being able to shed our positive illusions without also succumbing to depression, although, for many, depression may be a necessary step along the way.