1. An act of copping out; especially failure to commit oneself. 
2. A person who cops out. [From "cop a plea," to plead guilty (to a lesser charge), from cop, to seize, from cop, short for copper, policeman, "catcher," from cop, to catch (hmm, not from the metal used in badges?).]

"Sensitivity training" -- when did that all start.  Was it the 1960's?  "Encounter groups," they were called for awhile.  Then "personal growth," I recall.

To say that many of the popular group therapy ideas which flourished throughout the 1970's exploited intuitive needs and enjoyed a popular appeal, not only in business and government but also in family and personal life, yet, lacking a firm basis in scientific thought, gradually diverged from practical realities and spiralled inexorably into epic nonsense -- to say something like that is too judgmental.

"Hey, that's a cop-out!"

"You're doing it again!  Commit yourself!"

"You're being too judgmental!"

"That's a cop-out!"