Martin Kantor is way too Freudian and dramatic for me. As soon as he gets to "castration anxiety" I tune out.

There is debate in the medical community over whether SAD and AvPD are all that distinguishable. In fact, there is considerable debate over the validity of the notion of a "personality disorder." As it stands, SAD can be limited to particular situations while AvPD, being a personality disorder, is pervasive, longstanding, and significantly affects most areas of a person's functioning.