3 Term Contingency= The consequence (reinforcer or punisher) is contingent on the occurrence of the behavior only in the presence of the specific antecedent stimulus)
•Discriminated Operant: a behavior that occurs more frequently under some antecedent conditions than it does in others (e.g., pressing the accelerator in the presence of green light)

•Stimulus Control: A behavior is said to be under stimulus control when there is an increased probability that the behavior will occur in the presence of a specific antecedent stimulus
•Unconditioned Reinforcer: a stimulus or stimulus change that can increase the future frequency of behavior without prior pairing with any other form of reinforcement (e.g., food, water, sexual stimulation).

•Motivating Operations: The momentary effectiveness of an unconditioned reinforcer is a function of current motivating operations.

•Unconditioned Punisher: a stimulus or stimulus change that can decrease the future frequency of behavior without prior pairing with any other form of punishment (e.g., extreme heat or cold, extreme levels of auditory or visual stimulation, any painful stimulus).

•Conditioned Reinforcer: : a stimulus or stimulus change that will function as reinforcers only after being paired with unconditioned reinforcers (e.g., money).

•Conditioned Punisher: a stimulus or stimulus change that will function as punishers only after being paired with unconditioned punishers (e.g., the word “No”).
•Operant Behavior: Behavior that is selected, shaped, and maintained by consequences that have followed it in the past.

•Operant Conditioning: the way a consequence of behavior control the future occurrence of the behavior (e.g., Thorndike’s law of effect)
• Reinforcer / Punisher

•Reinforcement: a principle of behavior; If a behavior is followed by closely in time by a stimulus change and as a result the