What is the name of the cognitive bias where an expert overestimates the knowledge of others? I'm looking for a name of a cognitive bias that describes the following phenomenon: 

A person has been exposed to some area of expertise from a very early age (think 7-10), and for an extended period of time. This can be sports, computers, musical instruments, etc. As the child matures, the child does not realize that such exposure has created a level of competency where even advanced tasks are easy for them.

After growing up such child may be surprised to find out that ordinary people do not have his/her level of expertise. As adults, such people can continue to write books or give advice, being [completely] oblivious that others do not come even close to their level of expertise.

What is the name of this cognitive bias, where individuals do not realize that other people do not share the same level of expertise?
This sounds similar to the "curse of knowledge" phenomenon (also called the "curse of expertise" by at least one publication that I found).

From Wikipedia:

"The curse of knowledge is a cognitive bias according to which better-informed people find it extremely difficult to think about problems from the perspective of lesser-informed people."

Some references:


Camerer, C., Loewenstein, G., &amp; Weber, M. (1989). The curse of knowledge in economic settings: An experimental analysis. The Journal of Political Economy, 1232-1254.
Birch, S. A., &amp; Bloom, P. (2007). The curse of knowledge in reasoning about false beliefs. Psychological Science, 18(5), 382-386.
Hinds, P. J. (1999). The curse of expertise: The effects of expertise and debiasing methods on prediction of novice performance. Journal of Experimental Psychology: Applied, 5(2), 205.