Various previous work has emphasized how bad constant interruptions and fragmentation of work is for knowledge workers’ productivity, the quality of their work, and also their motivation at work. When we were observing knowledge workers at their work in a previous study, we realized that signals, such as wearing headphones or closing their office door, were often used to visualize that they don’t want to be interrupted right now. However, this manual approach was often considered as quite cumbersome and not everybody was aware of these signs. Also, the long-term impact on teams and their work was unclear. This is why we developed the FlowLight, a physical traffic-light like LED combined with an automatic interruptibility measure based on computer interaction data.
In a large-scale and long-term field study with 449 participants from 12 different countries, we found, amongst other results, that the FlowLight reduced interruptions of participants by 46%, increased their awareness on the potential disruptiveness of interruptions, and most participants are still using it today!
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