Which internal factor is listed as influencing reinforcer selection?

• A. Weather outside
• B. Dog's mood & energy level
• C. Food availability
• D. Training duration

Answer: (B)

Reinforcer selection hinges on the animal’s internal motivational state. The dog’s mood and energy level are internal factors that directly influence how rewarding a given consequence will be at that moment. If a dog is tired or low on energy, a low-effort reward or a quick, soothing game may be more reinforcing than a high-energy task or a hard-to-obtain treat. Conversely, when a dog is lively and engaged, a more exciting or immediate reinforcement can be highly motivating. Because these states come from within the animal, they reliably shape what the dog finds reinforcing right now.

External factors like weather, food availability, or how long a training session lasts can influence behavior, but they are outside the dog’s internal state. They may alter the overall context or feasibility of training, whereas the internal mood and energy level specifically determine the reinforcer’s value at the moment of reinforcement. In practice, assess how the dog is feeling and acting before selecting a reinforcer to ensure it aligns with their current motivation.