Reinforcing
Reinforcing is the act of reinforcement. Reinforcement refers to the process where the delivery of an stimulus leads to increase in the probability of a behavior. Reinforcement might be done by giving an appetitive stimulus (positive reinforcement) or by the removal of an aversive stimulus (negative reinforcement). To put on other way, there may be either a positive or a negative contingency between the behavior and reinforcement. A positive contingency indicates to the condition when something is given. A negative contingency means that something is taken away.
Punishment is the reciprocal of reinforcement: it decreases the probability of a behavior, and is comprised of the delivery of an aversive stimulus (positive punishment, or simply ‘punishment’) or the removal of an appetitive stimulus (negative punishment or ‘omission training’). Here, it should be noted that there may be a positive contingency between the behavior and punishment or a negative contingency.