Why our attention spans are shrinking, with Gloria Mark, PhD

The Science of Shrinking Attention Spans

• Expert: Dr. Gloria Mark, psychologist and professor of informatics at UC Irvine, author of Attention Span: A Groundbreaking Way to Restore Balance, Happiness, and Productivity.
• Shrinking Attention Spans: Research shows a significant decline in the average time spent on any single screen-based task:
  • 2004: 2.5 minutes
  • 2012: 75 seconds
  • Recent years: 47 seconds (median of 40 seconds)
• Types of Attention:
  • Focused Attention: High engagement and high challenge; typically peaks in the late morning and mid-to-late afternoon.
  • Rote Activity: High engagement but low challenge (e.g., simple games, social media); occurs uniformly throughout the day.
• The Cost of Constant Switching:
  • Stress: Frequent attention switching is correlated with higher stress levels, measured by heart rate monitors and self-reporting.
  • Performance: Multitasking leads to more errors and slower performance due to "switch costs"—the mental effort required to reorient to a task after an interruption.
• The Role of Breaks:
  • Breaks are essential to prevent burnout and replenish mental resources.
  • Break Points: It is most effective to take breaks at "natural stopping points" (e.g., the end of a paragraph or section) rather than interrupting oneself mid-task.
  • Interrupting oneself mid-task consumes more mental resources and increases stress.
• Key Takeaway: While some switching is natural and necessary for recovery, the current digital environment encourages rapid, constant task-switching that is detrimental to productivity and well-being.