That's not negative reinforcement. Negative reinforcement is when behavior is reinforced by removing an aversive stimulus. Yelling at a cat because it's scratch

That's not negative reinforcement. Negative reinforcement is when behavior is reinforced by removing an aversive stimulus. Yelling at a cat because it's scratching the couch is positive punishment [1]. And punishment works quite differently from reinforcement to begin with; it is typically less effective for far better socialized species such as humans and dogs, too. [1] http://en.wikipedia.org/wiki/Operant_conditioning#Consequences_that_shape_behavior:_Reinforcement.2C_punishment.2C_and_extinction http://en.wikipedia.org/wiki/Operant_conditioning#Consequenc...