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Multitasking Makes You Stupid and Slow
Reverse Gear recommends a long and interesting article over at The Atlantic in which Walter Kirn talks about the scientific results that support his claim and his own experiences with multitasking: that it destroys our ability to focus. "Multitasking messes with the brain in several ways. At the most basic level, the mental balancing acts that it requires — the constant switching and pivoting — energize regions of the brain that specialize in visual processing and physical coordination and simultaneously appear to shortchange some of the higher areas related to memory and learning. We concentrate on the act of concentration at the expense of whatever it is that we're supposed to be concentrating on... studies find that multitasking boosts the level of stress-related hormones such as cortisol and adrenaline and wears down our systems through biochemical friction, prematurely aging us. In the short term, the confusion, fatigue, and chaos merely hamper our ability to focus and analyze, but in the long term, they may cause it to atrophy."
I always thought multitasking made me slow, but more able to see alternative solutions. Sometimes a solution for task A comes from task B.
Just about every freekin job add I see requires the ability to multi task. I used to say that I can't do it. Now, I just say that I'm as good at it as any other human. Most of the gung ho corporate types insist that they can multi task wonderfully and trying to reason with them is pointless.
I prefer Flambe as apposed flamebait.
I agree with the author (Walter Kirn) of the article. Multitasking is so time consuming that the brain relies on the cerebellum (little brain) to handle a lot of routine tasks (maintaining posture, walking, standing, blinking, etc...) while the conscious cognitive areas of the cerebral cortex focus on an important task (e.g., talking, thinking, reasoning, planning, etc...). People with cerebellar lesions are known to speak in a halting stacatto-like manner. The reason is that Broca's area (the part of the brain that produces speech) is constantly being interrupted because the brain's motor cortex has to momentarily stop what it's focusing on in order to attend to the routine tasks that a healthy cerebellum would handle automatically. So multitasking is such a big problem that the cerebellum contains more neurons than all the other areas of the brain combined but it cannot do everything because it's a direct sensori-motor automaton. That is to say, it cannot plan or predict phenomena, so it is limited. Only the most primitive animals lack a cerebellum.
An IQ of 159 means that out of a random sample of 100,000 people, you have 8 people who share your intelligence, and maybe 4 or 5 who exceed you.
I've taught about 20 students with similar IQ levels. To you, and them, this article probably doesn't apply. Your minds are making unbelievably fast connections with little effort - so what to you is really just fast processing and quick changes is a neurobiological impossibility to others.
I always ask my students, "What will you do with the abilities and opportunities you are given?"
In my personal experience of meeting various interesting people, I feel that learned behaviours have a lot to do with how one's mental skills are shaped, and hence how the person is perceived by others.
One friend of mine had a very bad childhood. She learned to escape inwardly, by concentrating on books, study, escaping physically to a library any time she had the chance. Now, she is a doctor. She also has a photographic memory and can "re-read" pages she has scanned. People might perceive her as "high IQ". However she has trouble reading people, and cannot pick up more than the basics of computers, as she gets frustrated and bored easily. You could say she's a bad multitasker.
If an IQ test was based on mechanical cognition, she wouldn't rate very high. If it was memory-based, she would excel. If it was dependent on multi-tasking, she would also struggle.
Briefly, I'm the opposite. Multi-task all the time, rarely bored, but my visual memory sucks. I'm good at judging people's moods, but terrible with faces and names. I grew up slightly hypervigilant, and for some reason need to swap tasks to keep my brain ticking over, like those old watches you had to shake to wind up. I'm good at remembering practical and mechanical skills, of which I class programming as one. Which is funny, others I've spoken to class programming as technical, or mathematical. To me, it's mechanical, like a watch.
If I sat an IQ test which required visual memory, I'd fail. If it relied on drawing meaning from literature, or reading body language I'd do well. If it required multi-tasking (like the classic male-secretary-in-busy-office experiment) I'd breeze.
My point is, learned behaviours can sometimes be extreme, leading to some amazing skillsets while impairing other skillsets. So what does a measure of multi-tasking ability or IQ really mean, in terms of gauging "intelligence"? Nothing, in my opinion.
To me, intelligence, simply means we function well in our environment. As modern humans, we tend to pick our environments so that our learned skills are most applicable. That's "comfort zone". Sometimes dysfunctional, but always dependent on the skills you have learned therefore, ideally, the place where you are most "intelligent".