After interviewing the 63-year-old, Dr Wade concluded she had "prudently and courageously resisted the violence of the hostage takers during the incident".
"I have never met an oppressed person who accepts exploitation. I have been waiting to meet such a person, but it hasn't happened yet. They must exist, because they're written about so widely, right?"
He said Stockholm Syndrome was "both a cliche and an accepted clinical reality," and called into question the notion of a victim having positive feelings towards an abuser.
Dignity 2015 is centred around "Response-Based Practice" (RBP), an approach to treating psychological trauma resulting from violence.
The four-day event is due to close tomorrow.
For more information about the Dignity conference, visit: www.dignity2015.co.nz