Speaking from personal experience, that talent itself can also be developed and improved. It's not easy, and can definitely take awhile. 'The Art of Learning'

Speaking from personal experience, that talent itself can also be developed and improved. It's not easy, and can definitely take awhile. 'The Art of Learning' by Josh Waitzkin could be a good start for someone who wants to improve in this area. Of course, one could also learn how to make their study technique more effective so they don't need to spend 10 hours. See 'Your Memory: How It Works and How To Improve It' by Higbee for that.