Have you ever been at work when somebody approaches you asking for “a minute of your time”? I’m sure we all have. The problem is that the damage done by that interruption is much more than just time consumed by the interruption.
This isn’t just about the interruption taking a minute —because rarely is that true— but it’s about the time it takes for you and your brain to recover and get back into the mindset you were in prior to the interruption. A study printed in the New York Times that used Microsoft employees as a sample set showed that it took, on average, an employee 15 minutes to recover from even the most trivial of interruptions, such as an email notification.
I have known this for quite a while from my own experience, but I believe that the estimate might be a bit on the conservative side. The reason for this is that an interruption, regardless of its length or importance, destroys your concentration. The people in this study weren’t just folks off the street, but were the well trained and intelligent folks at Microsoft, so I believe the recovery time could very well be longer for most people. Additionally, I would think that the difficultly of the work in progress has an impact upon the recovery time as well, and would not be surprised that it could take as long as 30 minutes to recover from an interruption to a difficult task.
Just for the sake of argument, let’s say the person approaching you for a minute of your time really does need only a minute, and the recovery time for an interruption is 15 minutes. The total cost of that interruption to you, in terms of productivity, would be around 16 minutes, and possibly longer depending upon the difficulty of the interrupted task.
Mark McGuiness describes the reasoning behind this as a memory retention issue. Your memory is dependent upon your mind’s state; when your focus changes, as what happens when being interrupted, your mind’s state changes, and you lose a bit of the memory of the task you were working on prior to the interruption. The example he gives is one in which we’ve all participated: being interrupted in a conversation, then, post-interruption, on person asks the other “what were we talking about?”
Now, what to do about this? Banish all interruptions? Do that, and business as we know it would collapse (yes, even more than it’s already collapsed this year). Most interruptions are necessary, and the people doing the interrupting usually aren’t doing so to break other people’s concentration. There are questions to be asked and answered, but there are some interruptions that just must be told “no.” So the answer to what to do about this is something I’ll be writing about over the next couple weeks, using three different scenarios. Next will be a topic near and dear to my heart, meetings, and in specific that most evil villain the “Status Meeting”. Following that, I’ll have entries for breaks, and how to take them, and then interruptions in general.
Photo by: TW Collins
References:
- Avoid the ‘Sisyphus Effect’ of Endless To-do Lists
- Interruptions
- Slow Down, Brave Multitasker, and Don’t Read This in Traffic
Tags: focus, interruption, meeting