Giving one credit for thinking (9)

I believe the answer is:

believing

I'm a little stuck... Click here to teach me more about this clue!

'for thinking' is the definition.
('believe' can be a synonym of 'think')

I don't understand the remainder of the clue.

(Another definition for believing that I've seen is " Crediting".)

I've seen this clue in The Irish News.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.