040Effect
Serial Position Effect
When presented with a list of things, people are better at remembering the first and last items, than those in the middle.
Why it matters
This is a practical design principle based on two concepts:
• The Anchor Effect— people become anchored to the first piece of information they see. • The Recency Bias— people are better at remembering the most recent thing they've seen.
Purchases:
• If you sell multiple products (tiers), then the order that they're presented is likely to influence which options people select.
What to inspect
- Check whether the experience reflects this: The Anchor Effect— people become anchored to the first piece of information they see.
- Check whether the experience reflects this: The Recency Bias— people are better at remembering the most recent thing they've seen.
- Check whether the experience reflects this: If you sell multiple products (tiers), then the order that they're presented is likely to influence which options people select.
Common anti-patterns
- Assuming users consciously notice every place where "When presented with a list of things, people are better at remembering the first and last items, than those in the middle" could apply.
- Dense copy and parallel actions that increase mental effort unrelated to the user’s goal.
- Ignoring downstream effects on attention & interest when shipping this pattern.
Critique prompts
- The Anchor Effect— people become anchored to the first piece of information they see.
- The Recency Bias— people are better at remembering the most recent thing they've seen.
- If you sell multiple products (tiers), then the order that they're presented is likely to influence which options people select.
- Where on this screen would "Serial Position Effect" show up as friction or misunderstanding?
- What would a first-time user misunderstand here in under five seconds?