Answer: strengthen; weaken
Step-by-step explanation:
Based on operant conditioning, positive and negative doesn't mean good and bad.Positive in this case means adding something and negative means subtracting something. Reinforcement refers to encouraging a desirable behavior and punishment refers to what is done in order to eliminate an undesirable behavior. Positive or negative reinforcement all aims at strengthening a desirable behavior the difference is in Positive reforcement something is added in a form of a reward with an aim of encouraging or strengthening the behavior whilst negative reforcement something is taken out so that the desirable behavior can continue or improve .
Negative or positive punishment all aims at eliminating a particular unwanted behavior through taking something away that will discourage that behavior or adding something that will also discourage the behavior.