The results were actually quite interesting: The most conduct disorder occured in the group that had parents with ASPD, and the group that was placed in the "disturbed" home. The children whose parents had no history of AntiSocial Personality Disorder and were placed in the "stable" environment conducted themselves perfectly fine. This means that both genes and the environment influence the disorder.1
Then, later on, someone performed another study, but this one was on people aged 18 and up. (Antisocial Personality Disorder starts developing in a person at about the age of 15, but it is not clearly evident until 18 years of age.)
This study was focussed on the brain waves of the subjects. It had been a topic of discussion for a while. Researchers and Biological Psychologists had discovered that the alpha waves in our brain control the way we react to certian things. What they found was that the faster your alpha waves were travelling, then the more tense or distressed you would be. And, if your alpha waves were slow, and calm, then the calmer you would become. Ultimately, the slower the waves travel, then the drowsier you become.
So, the theory is that the people with Antisocial Personality Disorder have alpha waves just the same as everyone else. What separates ASPD-er's is that their alpha waves do not function the same was as most peoples. Suppose you're being arrested, you would probably be a bit nervous, tense, scared perhaps. In this situation, your alpha waves would be travelling at an increased rate than usual. If someone with ASPD were in the same situation, thier alpha waves would be travelling at about the same rate as usual, and would therefore be able to remain quite calm.2
This further explains why people with AntiSocial Personality Disorder can do some of the things that they do, and are seemingly not affected by it at all.
