There are all kinds of yips; I don't even really consider someone like Tom Watson who just struggled making putts from 3-5ft as even having the true yips, I consider him someone who just lost his ability to make short putts consistently.
I have had friends who IMO had the true yips; meaning they literally could not make a putt over 8 inches, another of my playing partners swears to this day that he caught them from the other player. These players were better from 8 ft then they were from 1 ft.; Charles Barkley is someone who has the yips, literally a mental block on swinging the club or putter.
The claw saved one of the above mentioned players and the long putter saved the other, neither was ever great but a child could make the putts they were missing.
I personally will have the chipping yips that come and go, sometimes I will literally stand over a chip and know that there is no possible way I can hit it; have tried with my eyes closed, one handed, etc..; as soon as they appear they leave, and I will have total confidence around the greens. Golf is a funny game, and the yips tell you how mental it is.
When I start missing short putts, which happens with me occassionally, for example I played 9 the other day and hit all 9 fways and all 9 greens and shot 38 with 3 birdies, I will start spot putting even from 2 feet; I know that if I can roll the putt over something 1 inch from my ball then the putt will go in, rarely do you have to "feel' it to the hole from that close.