First of all, I have my doubts as to whether his therapist recommended he not take it. But then again, I have very little faith in most therapists from all the crap I've read here over the years about the ignorant advice so many therapists love to throw out there, so it's possible she did tell him not to. Her 'opinion' on how much it will help or not is EXACTLY that - her opinion.
Personally, I think he's using that nonsense as an excuse to avoid it whether she 'advised' it or not. And it's unfortunate you're actually letting some therapist decide what YOU need in order to heal.
I guess he STILL thinks this the All About HIM Show at your house.
What StrikerOne isn't taking into consideration about polygraphs is the INTIMIDATION factor. We can go around in circles all day as to the validity of polygraphs, the variables, the reliability, the ability of people to drug themselves and/or "have the balls" to fake it through the test and pass it, etc. etc.
But for most everyday people, a polygraph is intimidating as hell and most don't have the ability to just pass it simply because they want to.
Most see it as the end of the line for their lies because they'll be exposed, so they try to avoid a poly like the plague. Many will confess to their wrong-doings days before the test, the night before the test, the day OF the test, or even in the parking lot of the poly facility right before they go inside to be tested. That's what we refer to as the 'parking lot confession.'
Because for most average people, the intimidation factor is very powerful. The thought of being exposed by a stranger for the liar you are is overwhelming, and that's why a lot of us get 'confessions' before the test. Usually, these confessions are still only part of the whole story designed to make you think you now know everything, but chances are high you still don't. They do that hoping you'll cancel the poly thinking you know it all now. Smart BS's won't cancel the poly no matter WHAT, because there's always more to the story they're not being told.
DeservesBetter, you're setting yourself up to be lied to and deceived by this man for the rest of your life because you're operating from a place of FEAR instead of confidence. You clearly say in one of your posts that you're afraid to tell him not taking a poly is a deal breaker and you're afraid he'll accept the divorce papers if you did have them drawn up.
And THAT'S why you'll always be lied to and deceived by him. Because you're too afraid to stand up for what you need. Your fear is allowing him to manipulate you and he KNOWS it. He KNOWS you're too afraid to do anything about it.
Stop begging him to take it. Stop trying to convince him to take it. Stop bargaining and reasoning with him to take it. As long as he's got NOTHING TO LOSE, he'll continue to disrespect you and not take it.
He doesn't give a CRAP about what you need. This is all about saving his sorry ass.
You're not in reconciliation. Those who are still lying and covering their asses are NOT remorseful. It's still about HIM and what HE needs. And what he NEEDS is to continue lying to you because he probably has a lot more he's hiding that you know nothing about - and that's the way he wants to keep it.
And as long as you continue to operate from a place of fear instead of determination, he'll continue to manipulate you because he knows you won't do anything about it in the end.
Time to change up your strategy.