Daily - WH and I saw a Gottman-trained MC immediately after dday. Today I'd describe it as a comedy of errors, from seeing an MC (v IC) and seeing a Gottman MC, who was in WAY over her head with us. One of the big issues I had with that MC was the ASSUMPTION that the words coming out of my WH's mouth had any shred of HONESTY
However, at the time, it was pretty damaging to me when WH spewed his crap (including that I and the M were the reasons for his infidelities, and all the "I don't recall" that most BS hear) and the MC saying it was ME who was stalling things for not believing/trusting him.
She also gave us a ton of Gottman reading (starting with 4 horsemen).
My takeaway from that and the reading (at the time and since) has been that Gottman may be the "go to" for communication and other marital issues, but IMHO is not particularly helpful when it comes to infidelity - and certainly prior to a BS choosing to COMMIT to the path of R. One reason is that - and I'd say is shown in the responses on this thread - his writings are IMO often murky when it comes to responsibility, and in some works, one seems to have to read between the lines to get the takeaway that infidelity is a person problem and not an M problem. I find his writing (along with Janis Spring's After the Affair) to have a lot of subtle innuendo and implied BS-blaming (and with Spring not necessarily so subtle). In the days/weeks/months (or for me years) after dday, BS' traumatized brains are not functioning very well and often unable to discern those subtleties (or even recognize the nuanced ways in which the language is casting blame upon a BS). In one place he may (even clearly) say it's the WS choice, but then the next page delves into this nuanced language that implies otherwise, and while that may not consciously "register" when reading (esp for a newly traumatized brain), we DO take that in (esp when a BS may be desperate to find a sense of control, that can often lead to blaming themself to begin with, as if we "had only" x or y or z, then we can start doing THAT and control whether the WS continues to cheat - or at least convince ourselves of an ILLUSION of control over another's behavior)
Now, this does make some sense to me, in that his work is broadly about MARRIAGE, and plenty of marriages struggle/die without any infidelity.
IF my WH had done the work & shown himself to be R-worthy for me to commit to R, I think Gottman theory/methods would likely be very helpful. But w/o meeting that, IMO crucial, threshold, not so much. The atone, attune, attach STARTS with "atone" and, as I think plenty of us on SI have experienced/seen, many WH are never able to get there. It also seems to me that Gottman spends little/no time addressing the ways in which the WS' making the choice to cheat likely (always?) stem from long-standing patterns of unhealthy coping, things learned in FOO, or what Minwalla would call integrity disorders (and I see the ying/yang between the two as Gottman's base of work is broad as to marriage, while Minwalla's base of work is specific as to sex addiction, but both branch "in" [Gottman to infidellity] or "out" [Minwalla to non-SA infidelity and marriage] from their respective bases of work). I think glossing over the WS' unhealthy patterns is another nuanced way of implicitly blaming the M, vs the WS (which still makes SOME "sense" in that Gottman is focused on MARRIAGE, not specifically infidelity).
FWIW, I also believe Gottman was a WS, that his first TWO marriages ended in divorce is pretty well glossed over, which to my BS mind, raises some big red flags. Doesn't mean his research is not solid... but does, for me, question some of his writings on infidelity and most certainly the murky language he often uses about the "reasons" for the cheating to begin with.
And, like all things, we take what fits and leave the rest behind.