product teardown

Miller's Law

The average person can only keep 7 (plus or minus 2) items of information in their working memory at a time.

Main points

Chunk content in groups of 5-9 in order to not overload the users short term memory.

The application of Miller's Law is especially important for first time users of your website / product.

We naturally group content everyday. For example, we chunk the digits in phone numbers into groups (i.e. 07700-123-456).

Usage tips

Top level navigation

If you want a user to remember all your top level navigation options, limit them down to less than 7 choices.

Chunked content is easier to scan

It is important to chuck information into groups of related content. Chunking large paragraphs of text can also make it much easier for the user to scan for the information they are looking for.