I think as has been said, if someone wants to use an excuse, they don't need IFS necessarily to do it. My diagnosis [fill in the blank] did it, seems to be a particularly pervasive one in some cases.
But the problem I see with IFS when it comes to 'excuses' (and I suppose this may only happen if conducted inexpertly) is that if someone says their 'child part' did it (this could be expressed in different ways, not necessarily so literally), I would think it would be very difficult to confront a child with displacing responsibility, with not owning their behavior, you know? Whereas, in other modalities, it's always (presumably) an adult sitting across from the therapist, so to confront an adult about displacing responsibility just seems more doable to me. How do you confront a 'child part' with something like this? How do you discourage someone from 'hiding behind' a child part, if this is what is going on?
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