Gabor Maté is a physician who spent over 20 years working with drug users in the East side of Vancouver. He rejects traditional models of drug addiction and instead emphasises the importance of understanding people's whole lives and the relationships (or lack thereof) which lead them to be who they are.
Similarly to Alfie Kohn, he rejects a lot of traditional parenting wisdom as damaging to children. Diseases such as ODD he sees as symptomatic of Western consumer society's blaming its victims rather than admitting its own fundamentally disfunctional nature. Children in most countries today, he argues, are deprived of natural relationships with mature adults, leading them to grow up fundamentally insecure and immature themselves.