11 Feb The Science of our Optimism Bias and the Life Cycle of Happiness
This article's quite a bit longer than the ones I usually post BUT it's a very interesting and thought provoking, not to mention informative and useful article so I hope you find some time to read it in the near future…
by Maria Popova
“If I expect as little as possible, I won’t be hurt,” Susan Sontag famously wrote in her diary. And yet we’re wired to expect a lot — and to expect great things. So argues neuroscientist Tali Sharot in The Science of Optimism: Why We’re Hard-Wired for Hope — a short, absorbing TED Book summarizing Sharot’s own research, as well as that of others in the field, using a combination of neuroimaging and behavioral science to explore why we’re “more optimistic than realistic,” what this might mean for our everyday well-being, and whether it’s due to the specific architecture of our brains.
The root of optimism, Sharot suggests, isn’t far from what Montaigne argued five centuries ago. She writes:
Optimism starts with what may be the most extraordinary of human talents: mental time travel. That is, the ability to move back and forth through time and space in one’s mind. To think positively about our prospects, it helps to be able to imagine ourselves in the future. Although most of us take this ability for granted, our capacity to envision a different time and place is critical for our survival. It allows us to plan ahead, to save food and resources for times of scarcity, and to endure hard work in anticipation of a future reward.
While mental time travel has clear survival advantages, conscious foresight came to humans at an enormous price — the understanding that somewhere in the future, death awaits. This knowledge that old age, sickness, decline of mental power, and oblivion are somewhere around the corner, can be devastating.
In some instances Sharot cites, this “optimism bias” might be better termed “narcissism bias” — a phenomenon known as the “superiority illusion”:
In a survey by two Ohio researchers, 25 percent of respondents said they were in the top 1 percent for getting along well with others. A separate study of college students found that 93 percent of respondents in the U.S. believed they were above average in driving ability. Most people would even be willing to bet money on it if you asked them to. This high level of car-handling expertise, however, is statistically impossible — we cannot all be better than everyone else.
In discussing the role of memory in optimism and illusion, Sharot echoes the idea that memory is not a recording device:
Memories … are susceptible to inaccuracies partly because the neural system responsible for remembering episodes from our past may not have evolved for the memory function alone. Rather, the core function of the memory system could in fact be to imagine the future — to enable us to prepare for what is to come. The system was not designed to perfectly replay past events, they claimed. It was designed to flexibly construct future scenarios in our minds. As a result, memory also ends up being a reconstructive process. Occasionally, details are deleted. At other times, they are inserted.
She traces the intersection of memory and optimism to a neural framework:
The capacity to envision the future relies partially on the hippocampus, a brain structure that is crucial to memory. Patients with damage to their hippocampus are unable to recollect the past, but they are also unable to construct detailed images of future scenarios. They appear to be stuck in time.
Findings from a study I conducted a few years ago with prominent neuroscientist Elizabeth Phelps suggest that directing our thoughts of the future toward the positive is a result of our frontal cortex communicating with subcortical regions deep in our brain. The frontal cortex, a large area behind the forehead, is the most recently evolved part of the brain. It is larger in humans than in other primates and is critical for many complex human functions such as language and goal setting.
Curiously, people with depression are better able to predict future events accurately, indicating that we would all be somewhat depressed if we lacked that very neural mechanism that underpins our optimism bias. But, of course, there’s a problem with that realistic — or, worse yet, pessimistic — accuracy…
…keep reading the full and original article HERE