Thee ability to expand short term memory by linking ideas and concepts together is called chunking.
An example of chunking is dividing a mobile number into 3 sets to easily memorize them rather than memorizing an 11-digit mobile number. Let’s say your mobile number is 09171001234. A person can use chunking to divide this number into 3 sets like this which would be easy to remember:
0917 – 100 - 1234 .