Yes, I have read the research myself.
Apparently, multitasking is a bad idea.
If you practice your yin yoga poses, there are so many things you can do WHILE you are holding your seated poses.
You can do pose of nobility, half lotus, full lotus and pigeon WHILE throwing a dog toy, WHILE listening to B.B. King and Eric Clapton play the blues, WHILE sitting by a fire, WHILE blogging, WHILE knitting.
This to me equals a great evening.
I highly recommend you try it sometime.