Memory

Serial Position Effect

Users have a propensity to best remember the first and last items in a series.

Why it matters

Users consistently recall the first and last items in a list and forget the middle. Navigation items placed in positions 3–5 of a 7-item menu receive disproportionately less engagement, regardless of their importance.

  • 1Place the most important items at the beginning and end of lists.
  • 2Put key navigation items in the first and last positions.
  • 3Don't bury critical actions in the middle of a menu.
  • 4Use this for tab bars, navigation, and feature lists.

The first and last items in this navigation are visually emphasized. These are the ones users remember best.

↑ Primacy···↑ Recency

The primacy effect (first items) and recency effect (last items) make these positions most memorable.

1// ✅ Good: Key actions at edges of bottom navigation
2<nav className="flex justify-around border-t py-2">
3  <NavIcon icon="home" label="Home" />       {/* First: primary */}
4  <NavIcon icon="search" label="Search" />
5  <NavIcon icon="cart" label="Cart" />
6  <NavIcon icon="profile" label="Profile" />  {/* Last: important */}
7</nav>
8
9// ❌ Bad: Important items buried in the middle
10<nav className="flex justify-around border-t py-2">
11  <NavIcon icon="settings" label="Settings" />
12  <NavIcon icon="home" label="Home" />
13  <NavIcon icon="profile" label="Profile" />
14  <NavIcon icon="help" label="Help" />
15</nav>

Place the most important navigation items first and last.

Analyzing against Serial Position Effect
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