disposition

1. Are "obsessive, uncommunicative artists" those isolated and lonely artists that do nothing but art?

2. Does "disposition" mean "tendency"

Context:

Are artists born? There is some evidence that scientists may be. Cambridge Professor Simon Baron-Cohen, an expert in autism, has presented data which shows that scientists score significantly higher on a standard scoring test for autistic tendencies than either humanities scholars or social scientists. Neuroscientist Mark Lythgoe has undertaken research via questionnaires to scientists and artists and found that, by and large, scientists are ‘systemisers’ while artists are ‘empathisers’. All the same, one can think of obsessive, uncommunicative artists, and the interesting questions may relate to how far they were born with particular ‘talents’ or how far they were shaped by circumstance, or whether, being so inclined, they gravitated towards the occupations they felt most comfortable with. All artists will possess the same basic brain structures and functions as the rest of the population but they may also have inherited a unique combination of dispositions. The term ‘disposition’ is an important one because any tendency, any potential towards one specialised talent or another, will be realised only if the environmental conditions are supportive.