Antecedent
What comes immediately before the behavior.
Consequence
What immediately follows the behavior.
Reinforcement
The addition or removal of something following a behavior that results in an increase in frequency of that behavior in the future.
Extinction
A discontinuance of reinforcement of a behavior that results in a decrease of the future frequency of that behavior.
Reinforcer
Something added or removed following a behavior, resulting in an increase of that behavior in the future under similar circumstances.
Punishment
The addition or removal of something following a behavior that results in a decrease in frequency of that behavior in the future.