Abstract

Attention-deficit/hyperactivity disorder (ADHD) represents adaptation to defective neurotransmission – an adaptation seldom with benefit. The resulting behavioural style not only increases vulnerability to adverse experiences, but also creates a context in which encountering adversity is more likely. Furthermore, the fact that ADHD is a highly heritable condition increases the probability of a child with a compromised neurobiological disposition being raised by caregivers with suboptimal resources.