George Miller's 1956 review reported the capacity of short-term memory as:
- 10 plus or minus 3
- 2 plus or minus 1
- 7 plus or minus 2
- 4 plus or minus 1
Show answer and solution
Correct answer: C. 7 plus or minus 2
1. People retain between 5 and 9 items.
2. Miller called it the magic number 7 plus or minus 2.
3. Cowan later found working memory holds 4 plus or minus 1.
_Source: OpenStax Psychology 2e, Chapter 8, Memory (CC BY 4.0)._