ASPD is heavily behavioral based but on the other hand, psychopathy is interlinked with possible abnormal brain structures and there have been studies that the psychopathic brain is simply, different.. psychopathy is clinical astonishment in neurology and psychiatry because they are finding something new all the time; though most are based on beliefs/theories of results.

As Shayatancia stated; the majority of psychopaths have ASPD whilst ASPD do not have psychopathy.

The term "sociopath" is far too ambiguous and is not consensual, there are far too many interpretations. I believe "sociopath" relates to: upbringing, experience and environmental roles and its displacement.. I do not believe that sociopaths have an operating conscience but choose to ignore it (that's another interpretation of "sociopathy").

Take a read of the links below explaining abnormalities.

http://www.ncbi.nlm.nih.gov/pubmed/14609889

http://neurologicalcorrelates.com/wo...ght-hand-side/

http://www.sciencedaily.com/releases...1122230903.htm