Improving meta-cognition:
To understand something better, so that e.g., one can teach it.

Improving performance:
So that you can repeat something over and over and refine it until it's really good. For example, an athlete. Here, the top experts are closely examined.

Achieving a specific result:
E.g., spelling, fighting phobias or diseases. Here, successful cases or examples are examined.

Transferring to other content:
Processes that are useful in one area of life or context can be transferred to another area.