Him or His

[yena]

Could anyone tell me whether the use of 'him' in the following sentence is correct?

I'm sure this personality development is all part of him learning how to communicate.

I though 'his' is correct because it relates to 'learning' rather than 'of'. Thank you in advance.

[engee30]

Could anyone tell me whether the use of 'him' in the following sentence is correct?
I'm sure this personality development is all part of him learning how to communicate.
I though 'his' is correct because it relates to 'learning' rather than 'of'. Thank you in advance.

You could use either him or his, without any change in meaning.

[yena]

Thank you, Engee.

[Casiopea]

Additionally, "learning" functions as a gerund, a noun, in that context, so the possessive adjective "his" would be the better grammatical choice.

[yena]

Thanks a lot, Casiopea. It's all clear now.