How attachment theory works in the therapeutic relationship

(…) When you delve into it, the question of how people change through therapy can make your head swim. Here’s a psychological intervention that seems to work as well as drugs (and, studies suggest, possibly better over the long term), and yet what is it, precisely, that works? Two people sit in a room and talk, every week, for a set amount of time, and at some point one of them walks out the door a different person, no longer beleaguered by pain, crippled by fear or crushed by despair. Why? How? (…)