Periodically, we hear about the rule of 7 +/- 2 from inexperienced interaction designers: Users can't handle more than 7 bullets on a page, seven items in a form list, or more than seven links in a menu. According to James Kalback, this has no evidence in reality – on the contrary. The psychologist George Miller's conclusions apply to what we can memorize – not what we can perceive.
Current research strongly supports that broad structures perform better than deep structures. Users can more easily cope with broad structures, they have a greater chance of getting lost in deep hierarchical structures, and new visitors are able to get a better overview of sites offerings from a broader structure.
- The Myth of Seven, Plus or Minus 2
- June 23, 2003
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