# George Miller ![[50 Resources/51 Attachments/51.03 Public/2026-03-23 George Miller.jpg|400]] George Armitage Miller (1920–2012) was an American psychologist who pioneered [[Cognitive Psychology]] and is best known for his 1956 paper "The Magical Number Seven, Plus or Minus Two," which established that human short-term memory can hold approximately 7 items (±2). This paper became one of the most cited in psychology and fundamentally influenced how we understand human information processing, with implications for everything from phone numbers to user interface design. Miller was a founding figure of the cognitive revolution that replaced behaviorism with an information-processing view of the mind. With [[Noam Chomsky]] and others, he co-founded the Center for Cognitive Studies at Harvard (1960). He later created WordNet at Princeton—a semantic database of English that became essential for [[Natural Language Processing (NLP)]] and AI research. His work bridged psychology, linguistics, and computer science, earning him the National Medal of Science in 1991. ## Key Contributions | Contribution | Description | |--------------|-------------| | **Magical Number 7±2** | Short-term memory capacity limits | | **Chunking** | Grouping information to overcome limits | | **Center for Cognitive Studies** | Founded cognitive science at Harvard | | **WordNet** | Lexical database for NLP | | **Plans and the Structure of Behavior** | Information processing model | ## The Magical Number Seven ``` Short-term Memory Capacity: ┌─────────────────────────────────────────────────────────────┐ │ Humans can hold approximately 7 (±2) items: │ │ │ │ ○ ○ ○ ○ ○ ○ ○ = 7 items (average capacity) │ │ │ │ Range: 5 items (minimum) to 9 items (maximum) │ │ │ │ Chunking expands effective capacity: │ │ "FBI CIA NSA" = 3 chunks instead of 9 letters │ └─────────────────────────────────────────────────────────────┘ ``` ## Implications of 7±2 | Domain | Application | |--------|-------------| | **Phone numbers** | 7 digits (before area codes) | | **Menu design** | 5-9 items per level | | **UI design** | Limited options per view | | **Learning** | Group information into chunks | | **Presentations** | Limited bullet points | | **Navigation** | Manageable category numbers | ## Career Timeline | Year | Event | |------|-------| | 1920 | Born in Charleston, West Virginia | | 1946 | PhD from Harvard | | 1948 | Joined Harvard faculty | | 1956 | Published "The Magical Number Seven, Plus or Minus Two" | | 1960 | Co-founded Center for Cognitive Studies at Harvard | | 1960 | Published *Plans and the Structure of Behavior* | | 1968 | Moved to Rockefeller University | | 1979 | Joined Princeton, began WordNet | | 1985 | WordNet first released | | 1991 | National Medal of Science | | 2012 | Died in Plainsboro, New Jersey | ## WordNet | Aspect | Description | |--------|-------------| | **Purpose** | Lexical database of English | | **Structure** | Words grouped into synsets (synonym sets) | | **Relations** | Hypernymy, hyponymy, meronymy | | **Size** | 155,000+ words, 117,000+ synsets | | **Impact** | Foundation for NLP, AI, search engines | ## Major Works | Work | Year | Significance | |------|------|--------------| | *Language and Communication* | 1951 | Early psycholinguistics | | "The Magical Number Seven" | 1956 | Memory capacity paper | | *Plans and the Structure of Behavior* | 1960 | With Galanter & Pribram | | *The Psychology of Communication* | 1967 | Essay collection | | WordNet | 1985 | Semantic database | ## Quotes <!-- QueryToSerialize: LIST FROM #type/quote AND [[George Miller]] WHERE public_note = true SORT file.name ASC --> ## Books <!-- QueryToSerialize: LIST FROM #type/book AND [[George Miller]] WHERE public_note = true SORT file.name ASC --> ## References - https://en.wikipedia.org/wiki/George_Armitage_Miller - Miller, G.A. (1956). "The Magical Number Seven, Plus or Minus Two" ## Related - [[Cognitive Psychology]] - [[Cognitive Science]] - [[Working Memory]] - [[Chunking]] - [[Noam Chomsky]] - [[Natural Language Processing (NLP)]] - [[Human-Computer Interaction (HCI)]]