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Results

#1. A client frequently uses a vending machine to purchase a specific brand of soda, as this behavior has been reliably reinforced by the machine dispensing the soda. One day, the client inserts money into the machine and makes a selection, but the soda fails to dispense. This occurs several more times, and the client eventually gives up and walks away without making a purchase from that machine again. Assuming the soda was the sole reinforcer for using that machine, what behavioral principle is primarily responsible for the decrease in the client’s behavior of attempting to purchase soda from this particular machine?

Positive punishment

Negative punishment

Extinction

Response cost

Extinction occurs when a previously reinforced behavior is no longer followed by the reinforcing consequence leading to a decrease in the future frequency of that behavior In this scenario the act of inserting money and selecting a soda was previously reinforced by receiving the soda When the soda failed to dispense ie reinforcement was withheld the behavior of attempting to purchase soda from that machine decreased This is distinct from punishment where a stimulus is either added positive punishment or removed negative punishment contingent on a response causing a decrease in future responding Here nothing was added or taken away rather the expected reinforcer was simply not delivered

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