Attentional Blink
A second target in a rapid stream is often missed when it appears shortly after a first target that receives attention.
Direct explanation
What it means
Selecting and consolidating one event can temporarily reduce access to another. Rapid stacked toasts or fast instructional steps may therefore compete even though each is visible.
Products frequently deliver several status changes in quick succession and then assume every message was processed.
Research anchor: Jane E. Raymond, Kimron L. Shapiro, Karen M. Arnell, 1992
Research and interpretation
What the research found
Observers often failed to report a second target presented within a short interval after identifying a first target in a rapid stream.
The blink is robust but varies with timing, task, target similarity, emotion, expectation, and training.
Popular advice versus careful use
Common shorthand: Wait exactly half a second between all interface messages.
Avoid forcing users to encode multiple brief targets in rapid succession and preserve consequential information for review.
How designers apply it
- 01
Queue important confirmations instead of flashing simultaneous toasts.
- 02
Pause a tutorial until the learner acts on the current cue.
- 03
Persist multiple upload outcomes in an inspectable status center.
Original UI examples
desktop admin
Bulk upload
Completion, one failure, and a permission warning remain in a results panel.
The user can inspect each outcome instead of catching three short toasts.
mobile notification
Transit alert
A route cancellation persists; a lower-priority promotion waits.
The second message does not compete inside the likely attention gap.
Form submission
Less effective
Show success, sync failure, and auto-dismiss countdown in one rapid sequence.
Better fit
Present the true final state with persistent details and one next action.
Consolidation is preferable when events describe one transaction.
Limits and failure modes
Rapid serial laboratory streams are not equivalent to all interface notifications, and no single timing rule fits every context.
Common mistakes
- Using a precise laboratory interval as a universal UI delay.
- Sending the same rapid cue repeatedly to compensate for misses.
When it should not dominate
- To delay independent emergency alerts without a risk model.
- When a persistent combined status is clearer than timed presentation.
Responsible use
Accessibility
Keep messages available, announce them in a controlled order, avoid speech interruption, and let users review notification history.
On mobile: System and in-app notifications need deduplication and a durable inbox.
Ethics and context
Do not place material terms immediately after an attention-grabbing reward or animation to reduce scrutiny.
On desktop: Aggregate bursty background events by task while preserving severity and time.
Designer checklist
- Map events that can occur in a burst.
- Prioritize and persist important outcomes.
- Test recall and action, not toast delivery.
Check your understanding
Which statement applies Attentional Blink most carefully?
Practice and continue learning
See ideas in real interfaces
These external interfaces are editorial references, not examples created to demonstrate this principle.
Sources and further reading
- 01Open source
Temporary Suppression of Visual Processing in an RSVP Task: An Attentional Blink?
Jane E. Raymond, Kimron L. Shapiro, Karen M. Arnell · 1992 · Journal of Experimental Psychology: Human Perception and Performance
Primary research · primary or original source
Continue the graph
Related principles
phenomenon
Selective Attention
Attention prioritizes some available information for deeper processing while other visible or audible information receives less processing.
phenomenon
Attentional Capture
A salient or abrupt event can draw attention away from the current goal, with capture shaped by stimulus properties and the observer’s attentional set.
phenomenon
Inattentional Blindness
People focused on a demanding task can fail to notice an unexpected, fully visible event outside their current attentional goal.