how much did the US spend on 'psychological operations' during the Vietnam War?

Answer 1

That is going to be almost impossible to accurately answer because 'psychological operations' could be anything from B-52 missions carpet bombing North Vietnam to covert infiltrations of SEAL teams into Viet Cong strongholds. That in mind, it's going to be very difficult if not impossible to define a dollar value.

Answer 2

Check out the movie Jacob's Ladder. Its a fictional scenario to the increase in psychology involved in Vietnam for both training and combat