A Definition of Concentration
The act or process of concentrating,
especially the fixing of close, undivided attention.
Can you do several things at once
or are you a one thing at a time person?
Are you able to concentrate with loads of noise going on all around you
or do you need peace and quiet to hear yourself think
I need quiet to do book work yet if I’m in the car I need the window open to hear the other traffic so I can concentrate on the road and know what’s going on around me 
There’s something about childhood concentraton I love 
Here’s one of our sons aged about 3 lining up the cars and blocks
completely oblivious to all about him