Depression Is a Creative Force in Human Evolution?
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What is it about depression that draws people to search for the benefits it brings to its lucky victims? Since I’ve been writing this blog, many writers have had great success with books and articles describing its positive role in life – giving people a creative edge, helping them figure out their lives or simply serving as a healthy and normal response to misfortune. The problem with each of these essays is that they invite confusion between mild depression, or limited periods of deeper mood changes caused by life events, and the much more severe depressive disorders.
The latest contribution in this vein is Jonah Lehrer’s New York Times article, Depression’s Upside. It’s about a theory that takes depression’s virtues to a much higher plane than that of individual insight. Depression, it turns out, evolved as part of our genetic makeup because it enhanced the human capability for analytical thinking and problem-solving. In short, depression has helped the human race survive.
This isn’t his idea. He’s summarizing the conclusions of a scientific paper by J. Anderson Thomson, a psychiatrist, and Paul Andrews, an evolutionary psychologist, but he adds a lot of additional material to support the notion that depression has its brighter side.
The concept is that depression improves the mind’s ability to focus attention on “complex social problems” (failing marriage, loss of job) through the process of rumination – the repetitive analyzing of a single problem. (Hence, the theory is called the analytic-rumination hypothesis or ARH.) Rumination fires up the area of the brain that specializes in analytical thinking, making it easier to break apart the elements of a problem that might otherwise seem overwhelming and so make it easier to find a solution.
Isolation from the rest of the world supports this tight mental focus and keeps the mind from being distracted, as does – I presume – loss of interest in sex, food, human relationships and fresh air. Since all these symptoms are coordinated so nicely to help with problem-solving, the authors contend that they must represent an evolutionary adaptation rather than a malfunction.
If this is true, I’ve really bungled the gift of my genetic inheritance. In all the decades of dealing with severe depression I never solved a single complex social problem. Amazingly enough, my mind was infinitely distractible, incapable of clear decisions and subject to aimless drift into a cloud of nothingness. At other times, I obsessed about my failings and worthlessness in prolonged self-torture and often thought of suicide. Perhaps, though unaware of it, I did sharpen my analytical abilities while sleeping all the time. However, my isolation from my family, if you can believe it, seemed to create problems rather than solve them. Clearly, I’ve given evolution a setback, especially since I’ve likely passed on this my distorted version of this gift to our three sons. Read the rest of this entry »






