PublicHealth said:
Cool theory, but how do you test it?
My thoughts exactly. I'm sure its only a matter of time though.
If we are making people better by providing therapy (as opposed to just medicating), then we must be changing neurophysiology somehow through our interventions. It's only a matter of time before someone is able to explain how that works. This theory is a first attempt at doing that.
I think testing a theory like this would go something like this:
(and I am borrowing some of what Dr. Siegel is suggesting)
Example:
Seeing a client with a childhood background of parental abuse/neglect. Has since then moved out into a better home and has done well socially and academically. As an adult, this person is seeking therapy because of a an inability to experience emotional 'closeness' with others.
An "Interpersonal Neurobiology" approach would go somewhat as follows:
(I'm making broad generalizations here - just try to follow the logic more than anything else and not whether each piece is true)
1) Attachment research informs us that individuals who grow up with poor attachments with their primary caregiver tend to have avoidant/dismissive relationships with others during adolescence and adulthood.
2) Neuroscientific research findings involving these individuals suggest that as children, they have underdeveloped right hemispheres (which makes sense because the right hemisphere function has to do with the more emotional/abstract/relational aspects of neural function). These individuals are also generally not as good at more 'right hemisphere' tasks.
3) "Interpersonal Neurobiology" would call the solution a process of "Neural Integration", where the goal is to promote more right hemisphere involvement and integration with the left and midbrain areas.
This solution seems consistent with what we might do in psychodynamic psychotherapy (i.e. bring unconcious/unresolved emotions to the surface so that the client can deal with them conciously and not feel the need to have "defenses" against emotions that have been feared or avoided)
So if everything follows, the "theory" makes intuitive sense and validates many of the abstract theories that psychologists have been using for years. I guess in order to test, you would need neuroimaging studies (with massive sample sizes) that look at "before" and "after" treatment to determine whether changes in neural activation do occur. I'm not sure you'd be able to do this with current neuroimaging instruments though.
Foods for thoughts.