An extinction burst is a dramatic increase in the frequency/duration/intensity of the problem behavior. Spontaneous recovery occurs after the behavior starts to go away and can happen even without reinforcement. You could be doing everything right and all of a sudden the behavior will pop back up.

In classical conditioning, when a conditioned stimulus is presented alone without an unconditioned stimulus, the conditioned response will eventually cease. In operant conditioning, extinction occurs when a response is no longer reinforced following a discriminative stimulus.

Extinction is not punishment. Punishment is an event. When you punish, you either add something (positive punishment) or take something away (negative punishment) in order to suppress a behavior.

Extinction occurs when species are diminished because of environmental forces (habitat fragmentation, global change, natural disaster, overexploitation of species for human use) or because of evolutionary changes in their members (genetic inbreeding, poor reproduction, decline in population numbers).

Fear extinction is defined as a decline in conditioned fear responses (CRs) following nonreinforced exposure to a feared conditioned stimulus (CS). However, there also is evidence to suggest that extinction is an “unlearning” process corresponding to depotentiation of potentiated synapses within the amygdala.

Memory extinction is a process in which a conditioned response gradually diminishes over time as an animal learns to uncouple a response from a stimulus (9). With contextual fear, extinction occurs when the mouse is placed into the context without shock after training.

Reinforcement means you are increasing a behavior, and punishment means you are decreasing a behavior. Reinforcement can be positive or negative, and punishment can also be positive or negative. All punishers (positive or negative) decrease the likelihood of a behavioral response.