wanghaisheng Memory Load Reduction
Design systems that remember so users don't have to. Working memory holds roughly 4 items. Every piece of information the user must carry across screens, steps, or sessions is a potential failure point.
Core Principle
If the system can remember it, the user shouldn't have to.
Design Patterns
Persistent Context
- Show key selections throughout a multi-step flow (chosen product, plan, date visible on every step)
- Display running totals in shopping and financial contexts
- Keep the user's search query visible in results
- In multi-step forms, show a summary sidebar of completed steps
Forward Carry
- Never re-ask information the system already has
- Pre-fill fields from earlier steps or previous sessions
- Carry context between screens (if the user selected "Business", don't ask "Personal or Business?" again)
- Remember user preferences across sessions
External Memory Aids
- "Compare" features so users don't need to remember options
- Recently viewed and recently used lists
- Copy-to-clipboard for reference numbers and codes
- Print-friendly versions of complex information
- Bookmarking or favouriting for later reference
Save and Resume
- Auto-save progress in any flow longer than 3 steps
- Allow users to return to where they left off
- Show when progress was last saved
- Send a reminder link for abandoned multi-step tasks
- Never require starting over when a session expires
Chunked Process
- Break tasks into 3–7 clearly labelled steps
- One decision per step where possible
- Allow forward and backward movement between steps
- Show progress: "Step 2 of 4: Choose your plan"
- Provide a review/summary screen before final submission
Assessment Questions
- Does the user need to remember anything from a previous screen?
- Is any information hidden that the user might need to reference?
- Can the user leave and come back without losing progress?
- Are there places where the user needs to transfer information between screens manually (e.g., write down a code)?
- Does the system re-ask for information it already knows?