Glossary
Chunking
What is Chunking?
Chunking organizes separate elements into a meaningful unit that can be treated as one item. It depends on learned relationships: a familiar word, pattern, or sequence can function as a chunk.
How Chunking Works in Memory
In Miller’s 1956 paper, recoding puts more information into each remembered unit. This differs from merely making pieces smaller. Familiarity and practice help a person use the combined unit.
Examples of Chunking
A familiar abbreviation
For someone familiar with “FBI,” the three letters can form one meaningful unit. Someone who does not know the abbreviation may have to remember each letter separately. The information is the same; the learned grouping is different.
Phone-number grouping
Phone numbers are often displayed in groups, such as an area code followed by the remaining digits. The formatting can suggest a grouping, but spaces and hyphens do not guarantee a meaningful memory chunk. Familiarity matters. The same principle applies to grouping related items in a list.
Limits
Chunking lets familiar units carry more information; it does not create unlimited memory or guarantee understanding and long-term learning. Breaking a project into tasks is a related everyday use of the word but is not by itself evidence of the same memory mechanism. Miller’s paper should not be treated as a universal rule for the number of items allowed in an interface.