Based on my reading & observations, skill at the upper end of a creative/intellectual domain seems to range from about 5-20% talent and 80-95% practice-related factors. A lot of people don't realize how important different types of practice are. The Talent Code cites a study where researchers found that students who believed they would practice an instrument for all their lives learned nearly 4 times as quickly as students who thought they'd play the instrument for a few years-with the same amount of practice!
The one consistent element of natural talent that comes up in intellectual/creative pursuits is working memory. The average person can hold roughly 7 "units" of information in their brain[0], which is why phone numbers are 7 digits long. When sightreading, pianists with a high working memory effectively have an advantage of a few extra years of practice[1]. I would imagine that a high working memory is also helpful in programming, as it determines how large a program you can easily hold in your head.
The one consistent element of natural talent that comes up in intellectual/creative pursuits is working memory. The average person can hold roughly 7 "units" of information in their brain[0], which is why phone numbers are 7 digits long. When sightreading, pianists with a high working memory effectively have an advantage of a few extra years of practice[1]. I would imagine that a high working memory is also helpful in programming, as it determines how large a program you can easily hold in your head.
[0]: it's a little more complex than just 7 pieces of information, see http://en.wikipedia.org/wiki/Working_memory#Capacity
[1]: http://pss.sagepub.com/content/21/7/914.abstract