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The productivity loss and mental fatigue incurred when switching between different tasks, projects, or applications. Research shows 23-minute recovery time per switch and up to $450 billion annual economic cost.

Research finding from a 2024 study showing that heavy multitasking can lead to a temporary drop of up to 10 IQ points, a reduction greater than the effect of losing a night's sleep, highlighting severe cognitive costs of task switching.

Research finding showing only 2.5% of people are 'supertaskers' who can genuinely multitask without performance degradation. For the remaining 97.5% of the population, multitasking is actually rapid task switching with cognitive penalties.

Feature in productivity tools like Rize identifying when users switch tasks, measuring multitasking frequency and impact. Quantifies 20-40% productivity cost from context switching through activity monitoring and pattern recognition, helping users recognize and reduce fragmentation.

Comprehensive research demonstrating that frequent task-switching costs up to 40% of productive time and can temporarily reduce IQ by 10 points. Studies show it takes an average of 25 minutes to refocus after interruptions, making context switching one of the primary productivity killers in modern workplaces.