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Multitasking Harmful To Productivity
Greyfox writes: "According to a CNN article, a person who is multitasking several things takes a hit on his productivity. Oddly enough, it reads almost exactly like a description of the problem with multitasking on computers; context switches cost, especially if you have to swap a lot of crap out in order to fit the new process into memory. So basically, an employee who can stay focussed on one thing for long periods of time is going to have higher productivity than one who has to handle constant interrupts. Now if I could get my manager to buy into that ..."
You pee twice as much while brushing your teeth? Better see a doctor about that.
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Hmm, that's interesting. For me, I can't use a form of languages on two tracks simultaneously. I can't talk and listen, or talk and write, or listen and write, or read and listen, or read and talk (unless I'm reading aloud) at the same time. I can jump back and forth between two tracks with no problem, and a little bit of overlap is fine, but I can't maintain two tracks of language usage for more than a few seconds.
Doing tech support, this means I can't listen to a customer while taking notes - I have to wait for a pause in the conversation before I can take my notes (or put them on hold, or whatever). If I try to take notes, I can only get a few seconds before I can no longer hear the customer - needless to say, this is rather embarassing, so I try not to do it. Fortunately my boss was somewhat understanding, so I never got in serious trouble for having a low call volume.
I wonder if I have a milder version of what you describe? I've never talked to a doctor about it; this is all just from my own personal observation of myself.
$x='S24;r)>63/* h@<5+oZ)32"5cz';$me='phroggy'x$];
$x=~y+ -xz+\0-Tx+;print$_^chop$me for split'',$x;
However, most modern piloting tasks don't require deep thinking. Try doing all that, or even half of that, plus taking a star sight and working out your position with sliderule and nav tables... That's why large airplanes used to have a four man flight crew -- two to fly, one to watch the multiple engines, and one to navigate -- and small airplanes didn't use to have that many distractions. E.g., Lindbergh could center the controls and take a star sight without worrying about running into anything over the Atlantic ocean.
Four radios, talking to six people, a co-pilot, maps, weapons systems, mast mounted sight, scanning for other aircraft, while on a screenline looking for bad guys, setting up relief on station and tracking the movements of everybody.
Multi-tasking? What's that?
DanH
Cav Pilot's Reference Page
UNIX - Not just for Vestal Virgins anymore
You got that right. I've got 18 freakin' browser windows open right now, forget about all the other stuff that's open, too. I'm impatient, and some of us can actually handle multitasking, thank you. Sure, there are some times when it slows me down, like I won't read a book while listening to something like the Phil Hendrie Show because that my brain doesn't handle very well. Then again, knowing the simps that work at CNN, it wouldn't suprise me in the least if they have one browser window open at a time, spending 50% of their time just watching that little blue ball spin 'round and 'round...
Trying to think of something profound, while going for First Post.
That'd be real-time multitasking.
There some very good parallels between brain work and computing in the 60's. A good CPU would often overrun the IO devices, and since the CPU cost half a million they didn't like wait cycles. So when it had to wait for IO, it would switch to another task, until that had to wait also, etc. The analogy is to you working on one job until you find that you need information from someone else to proceed, writing e-mail to him, then switch to another job until the reply comes back. This (task switching when on hold) improves productivity. On the other hand, when you get a phone call about some project you aren't even working on today, or have to stop coding to go to a meeting about parking spaces, you lose productivity. Likewise, interrupt-driven task switching tends to reduce the number of jobs finished per hour, and only became common when the CPU's became fast and cheap enough that you could afford to waste cycles.
Since the human brain isn't getting any faster, any situation where you are frequently interrupted is going to reduce the amount or quality of work completed. Note also that there are major and minor context switches, and the cost difference is much larger than the difference between switching processes and threads. Switching to a different part of the same project requires re-loading "registers" (short term memory), but the major context of the project stays the same. Switching to something I put away last week will probably require skimming through some of the documents to remember where I left off and to refresh my memory of the overall structure.
That basic concept also applies to driving a car. With new drivers, many of the basic decisions are handled consciously - and there are a lot of them. As you gain experience, your subconscious can take over a lot of the work, so you no longer have to concentrate on so many different things.
New driver:
OK, the light in front of us is turning red, so we have to stop. We need to shift into first, so first we step on the clutch, shift, release the clutch. Now we also need to step on the brake, slowly, paying close attention to where the car in front of us is so we get reasonably close without hitting it. OK, there, we're stopped, I can relax now.
Experienced driver:
Damn, I knew we should have taken the freeway.
$x='S24;r)>63/* h@<5+oZ)32"5cz';$me='phroggy'x$];
$x=~y+ -xz+\0-Tx+;print$_^chop$me for split'',$x;
There's a running joe that James' century old work represents basically everything cognitive scientists know today. In other words, not much new progress in the last 100 years. :) Anyways, to quote from James' book, chapter 11 (emphasis mine):
[p. 409] If, then, by the original question, how many ideas or things can we attend to at once, be meant how many entirely disconnected systems or processes of conception can go on simultaneously, the answer is, not easily more than one, unless the processes are very habitual; but then two, or even three, without very much oscillation of the attention. Where, however, the processes are less automatic, as in the story of Julius Caesar dictating four letters whilst he writes a fifth,[9] there must be a rapid oscillation of the mind from one to the next, and no consequent gain of time. Within any one of the systems the parts may be numberless, but we attend to them collectively when we conceive the whole which they form.
When the things to be attended to are small sensations, and when the effort is to be exact in noting them, it is found that attention to one interferes a good deal with the perception of the other. A good deal of fine work has been done in this field, of which I must give some account.
It has long been noticed, when expectant attention is concentrated upon one of two sensations, that the other one is apt to be displaced from consciousness for a moment and to appear subsequent; although in reality the two may have been contemporaneous events...
Chad Loder
Rapid 7, Inc.
The next generation of network security products
I suspect that, except for the staff geniuses and the people focused on make-or-break tasks, the answer is often that the productivity costs of multitasking is offset by its benefits.
Some thoughts from my workplace
I find myself more and more multitasking (and now its not just because i have to use win2k at work - but that adds to it) the fact is that we are caught by a couple of things
1. Expectations of Users - The average user has come to expect support and help in a much quciker time frame which couples with their increasing knowledge and skills (note this in general) to produce a class of user who thinks every problem is major and they then try to fix it them selves therefore ensuring it IS a major problem.
2. complexity of systems - this goes hand in handwith the above - eveyr day systems grow more and more complex - we are in the process of SAP implementation and this is a killer on the back on WIN2k, Intranet Payroll and HR and Intranet helpdesk loggin - the number of passwords grow and there is no easy way to resolve the issue and maintain security - that means the system become more complex on a daily basis and the struggle for support staff and users to keep up with the required skills and knowledge (paid training is an impossible joke in most companies - it does not happen)
3. Time and Resources - time is a valuable concept - the amount of time in a day is finite at 24 hours and you can only work so much of it - yet i spend a lot of my time waiting for things to load and dealing with FIX THIS NOW requests for low priority issues whilst trying to fix the major issues i have - it takes longer to tell them to go away than the fix would but you have to maintain a focus. Staffing resources have also decreased - in my role its down to 1 staff member for every 100 staff and sometimes less - i have a state to run with approx 200 users and there is me and one part time partly skilled staff member who gets sick 2 days a week, so you can imagine that i dont have time to relax - 18 hour days are standard and i have done more than one 20 hour.
4. Money - the pressure of technology means that companies have to stay on top of things to survive - that means upgrades, new systems, software etc. This comes at a huge cost - SAP cost us AU$20 Million and thats only year 1 - dont forget as IT we now have to look after Phones, Video Conferencing, TV's, Boardrooms, Photocopiers, Fax Machine, Building Management Systems, Security Systems, etc etc - all this with less staff than before (2 years ago to do less i had 3 staff full time working flat out) - no money = no staff (SAP again)
SO whats the multitasking point ?
Yes staff who multitask are probably less efficient but then again hiring adequate staff to fill the roles in an organisation would mean less multi tasking and more efficiency - simple maths really.
I multitask because i have to - the headaches, backachec, half done jobs and 10000 email messages i cold do without - im efficient as hell tho - i have to be to survive and stay sane.
No if you will excuse me the 5 minutes i took to write this whilst waiting for a server to reboot is up and i have to go fix SQL - god i wish i had another pair of hands as well...
I refuse to argue with Anonymous Cowards - if you want a discussion get an account....
Personally I do a lot of multi-tasking as in i'm involved in at least 2 (ideally 3) different coding tasks. I actually find myself to be very productive that way.
This was actually something i recently realized. One of the projects i am involved with was put on hold due to configuration problems with new hardware that was installed, leaving me to work on a single project until the hardware issue is solved.
I find myself getting extremely bored and tired of this single project after about 5 hours or so. I end up not being able to concentrate as well and my motivation level drops considerably compared with its level at the start of the day.
Anyone else notice anything similar?
--sidster
Play lotto? Try http://www.alottofun.com/
Tell a stock trader that he's going to be more "productive" by simply walking over to the gentleman he wishes to conduct a transaction with, and speaking quietly versus standing elbow deep in a pit with thousands of other guys screaming at the top of his lungs and flinging gestures at other traders.
It all comes down to the work environment. For some things, like engineering, QA, R&D, a quiet distraction-free environment is ideal. For other things, where transaction speed matters more than quality of execution, multitasking is the only way to go.
Bowie J. Poag
Oooh! Bright shiny object, sorry gotta go!
Editor Emeritus and Senior Writer, TeleRead.org
Well, duh.
As if computers have made people any more efficient in the first place. How often do I work on a paper for school only to check my email, run my TV Card in a window or listen to MP3's at the same time. Computers are more for entertainment these days than actual productivity. Although they can do that too....
I haven't done any formal XP projects but I've certainly had the experience of developing code alongside another person, and found it works very well.
A discussion of "multitasking for programmers" and why it hurts is at Distraction: the one big obstacle. This is written for programmers, but it is true for everbyody who works with knowledge.
You found a sword: +4 damage, +5 moderator points
We didn't have computerized timesheet system at that time(I got to write one later) because CPU time was costy. We had given a stack of palm-size timesheet cards, each slot is a 15-minute interval.(I think newer IBMers could find this timecards in storage room, they've printed quite a lot of them)
It wasn't so bad when one day our new manager introducing 'time-slicing' time-management technique, that we had to fill in different tasks in each time slot, to prove that you've 'used your time efficiently'.
Time-slicing was a new buzzwords that days. Obviously he didn't quite catch the meaning of it.
Clueless managers can be found everywhere.
Mr. Hu is not a ninja.
I can't. I have CAPD(Central Audiotory Processing Disorder). I could spit it out, if I knew what he was asking, but that's what I can't do, make sense of what I hear. If I'm doing ANYTHING else, I don't understand what somebody is saying to me, be it hitting something with a hammer, reading a book, coding, looking at a wall, if my attention is even remotely used for something else, I can't hear people.
That includes thinking of what to say when they're done talking, or if they get me thinking of something else. It's really annoying, actually. That's why I can't do the phone-monkey thing.It does have its advantages, though. I'm not easily interrupted when doing work, I don't hear people talking to me when I don't want to, it's not ignoring, it's involentary, but convenient at times. I have not trouble visiting my own little world.
God save our Queen, and Heaven bless The Maple Leaf Forever!
When I'm going insane with soem development I simply announce that I'll be at home till it's fixed. This works because:
This works for me. I can do helpdesk duties because I'm not trying to do anything long term most of the time. Just trying help users. But when I'm programming any interrupt withing a 3-4 hour time span destroys all my concentration.
Curiously - a great many comapnies in the UK don't encourage home working. They don't have a "policy" in place(!).
Come on UK management: why are so many people taking up expensive office space, polluting the planet, wasting their lives on the train, in the car or bus and stressing themselves to death when they *could* be at home 60+% of the time and actually do *more* work?
Why can't women be like Hedy Lamarr - beautiful, talented and inventors of frequency-hopping spread-spectrum techn
One new age, diversity celebrating, politically correct company chick asked me, from her list of prepared questions, "Do you believe you multitask well?" So, I asked her, "Can you define multitask, so I can be sure I'm answering the question you want answered?"
"Doing more than one job at a time", she replied, "like debugging one minute, explaining an important process change to a coworker the next, and then going back to debugging." I thought on this for a moment, wondering if it was a trick question, an honest question, or perhaps an honest question that through the acts of self deception and corporate mind-fucking had become a trick question. So I figured I'd just be honest, and let the chips fall where they may. "No, I do not believe that I multitask well in environments such as this, and in fact I do not believe that anyone multitasks well in an environment such as this. When I worked at Burger King, as a teenager, I could make fries and fill drinks at the same time, but those were not mentally challenging tasks."
"I happen to think that I multitask very well, and don't find that it's all that difficult", she said to me. And it was at that very moment that I realized that I was not meant to work in the corporate environment. Which is fortunate, because I did not get that job, and I'm still self-employed. The PC company chick? She proved that she multitasked well by volunteering for every function that would keep her in meetings, all day every day, and for avoiding work so skillfully, but being seen rushing past on her way from one conference room to the next, she was promoted and now runs the department.
My point? There is a fallacy floating around in corporate America, that in order to produce more output with less time and fewer resources, we must all fill many roles. Instead of focusing on doing one job very, very well, we are supposed to compensate for the fact that jobs have been eliminated, but their roles have not. So we are expected to "multitask" -- and the harder we're expected to swap, the lower the work output, the lower the quality of it. We are never allowed to operate at our full potential because we cannot achieve the mental state necessary to do Great Work. We find ourselves staring at the same problem for half the day, only to spot it within 20 minutes first thing the next morning, before our minds are cluttered up with corporate crap.
Productivity and quality will not improve no matter how many policy changes and process controls we are subjected to. What has to change is the production budget has to rise in direct proportion to shareholder dividend reductions. We are not going to cure anorexia by starving it to death!
Being self employed, I no longer have to deal with the down-sized company (or being down-sized out of a job) and can focus on my work as long as the telephone doesn't ring. It always seems to be that client with the hairiest project who calls right at that moment when the feeling of an inspiration forming is building... and I let my wife answer the call and take a message. Gotta love it.
Warning: This signature may offend some viewers.
I often have half a dozen (or more) things going on at once, switching between screens, applications,
and even computers regularly.
Why?
Because I'm *waiting* for things to happen. Waiting for that 3 minute web page to load,
waiting for that 10 minute compile, waiting for a reply to an ICQ, or whatever.
If I couldn't multitask, I'd be sitting dumbly staring at the screen waiting for whatever task I'm doing to
become ready for my input again.
Sure, a lot of time/energy goes in the context switch. But it's time that's wasted *anyway*.
- Muggins
I think I have the same problem although it sounds less acute. When my wife talks to me I can't hear her. The disorder seems to be hereditary because my kids can't seem to watch tv and hear their parents either...
It should be common knowlege, except management doesn't often seem to make the connection between reality and most management books. There's a great book The One Minute Manager Meets the Monkey all about deligating tasks to reduce the mmanager's stress level and allow him to focus. Unfortunately, This book alocates vary little time to task assignment across staff, such that your staff can focus on a limited number of tasks in an organized sequence. This is unfortunate since the productivity of a manager doesn't often ralate as directly as we'd all like to believe; to the productivity of his employees.
--CTH
--Got Lists? | Top 95 Star Wars Line
Trying to think of something profound, while going for First Post.
Women are great at multi-tasking. They can iron, watch tv, mind the kids and still find time to tell you all the things you have done wrong in the last two weeks.