Cognitive Load: More Information, Slower Pace
In brief
Working memory capacity is limited. Short video packs unrelated change into a short window, raising extraneous load and leaving less room for goal-relevant processing. Load reduction means: cut irrelevant stimulation, slice tasks smaller, and use external records to stop mental stacking.
Working memory is a tiny desk: the more you spread out at once, the less you can actually process. Cognitive load theory often separates three types:
- Intrinsic load: difficulty inherent in the task.
- Extraneous load: burden from poor presentation, distraction, and nonessential information.
- Germane load: effort that builds understanding and schemas.
How Short Video Raises Extraneous Load
Jump cuts, captions, sound, and comment entry appear together; orienting is pulled away repeatedly. It feels like “just relaxing,” but working memory keeps clearing and rebuilding. Result: after closing the app, the desk is still messy, and long tasks feel heavy to start.
How Training and Load Reduction Fit Together
- N-Back practices updating information under control so you can sense working memory limits.
- Schulte table demands ordered scanning, inhibiting the habit of glancing everywhere.
- Environment: single-task windows, fewer notifications—see Environment Design.
Practical Principle
Reduce extraneous load before you raise difficulty. Much “slower reaction” is excess interference, not permanent ability loss. Clear the desk and performance often rebounds quickly.