6 questions, about 60 seconds. Based on Gloria Mark’s work-fragmentation research.
On a normal day, how many hours do you intend to spend on focused, cognitively demanding work?
Focus fragmentation is the degree to which your working day is broken into segments too short to sustain demanding cognitive work. The idea comes from Gloria Mark's field research at UC Irvine, which timed how long knowledge workers stay on one thing before switching: an average of about 11 minutes on a task, and roughly 47 seconds on any single screen.
A Focus Fragmentation Score turns those measurements into a single 0–100 number for your own day, where higher means more fragmented. It is a diagnostic, not a diagnosis — the point is to show which part of the day is doing the fragmenting so you know what to change.
The score is a weighted average of five sub-dimensions, each rated 0–100. The benchmark throughout is the ~23-minute figure Mark, Gudith and Klocke (2008) measured for fully returning to a task after an interruption: a working block shorter than that cannot host resumed deep work.
It is a 0–100 measure of how broken your working day is. It is calculated from how long your longest protected block is, how often you are interrupted by others and by yourself, how your meetings are arranged, and whether you recover between tasks. Higher scores mean a more fragmented day.
Mark, Gudith and Klocke (2008) found it takes an average of 23 minutes and 15 seconds to fully return to a task after an interruption. A block of focus time shorter than that runs out before you are back at full concentration, so it cannot host deep work.
Below 25 is 'protected', where long blocks appear routinely. 25–49 is 'choppy', 50–74 is 'fragmented', and 75–100 is 'shattered', where sustained focus happens only by accident. Most knowledge workers land in the fragmented range.
The highest-leverage move is manufacturing one 90-minute protected block before the day's interruptions start. After that: add friction to your own reflexive checks, cluster meetings into one half of the day, and leave a one-line 'resume here' note before switching tasks.
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This tool is made by Ikuna, a focus-intelligence and context manager for macOS. See all free self-assessments.