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Speaking of Psychology · October 29, 2025 · 36m
Why Our Attention Spans Are Shrinking
UC Irvine attention researcher Gloria Mark discusses how digital technology has compressed our attention spans — from 2.5 minutes on a screen in 2004 to just 47 seconds today. Why multitasking is a myth, and how to reclaim focused attention.
This summary was generated from show notes and public descriptions, not from a full transcript review. Details may contain inaccuracies.
Canon
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Mark: the human brain cannot process two cognitive tasks simultaneously. What we call 'multitasking' is actually rapid task-switching, and each switch incurs a time cost (switching time), an error cost (mistakes increase), and a stress cost (cortisol rises). Heavy multitaskers perform worse on every task, not better.
Highlights
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Average screen attention has collapsed from 2.5 minutes to 47 seconds in 20 years
Mark: empirical measurement of how long people focus on a single screen before switching shows a dramatic decline: 2.5 minutes in 2004, 75 seconds in 2012, and 47 seconds in 2023. This is not because people have less capacity — it's because digital environments are designed to fragment attention.Was this useful?