Chunking

In cognitive science and human-computer interaction, chunking refers to the mental strategy of grouping individual items of information into larger, unified units (chunks) to reduce working memory load. Because human working memory can hold approximately four to seven items at a time, organizing information into hierarchical chunks — such as grouping digits of a phone number into segments of three or four — significantly increases the amount of information a person can retain and manipulate. In interface and content design, chunking informs how menu structures, keyboard sequences, navigation landmarks, and page content are organized. Grouping related items into conceptual units reduces cognitive effort and supports learning and recall, with direct relevance to accessible design for users with cognitive disabilities, memory impairments, or attention differences.