Treat training consists of rewarding dogs with edible treats whenever they respond appropriately to commands. Most dogs will quickly learn what they need to do to receive a treat, so this appears to be an effective training method. However, most dogs who have been treat-trained will not obey commands unless they are you should instead use praise and verbal correction to train your dog.
What this question is testing
Conclusion
The author wants you to skip treat training and use praise and correction instead.
Evidence
Why? Because dogs trained with treats only obey when they see one — and you cannot always have a pocket full of treats. Praise and verbal correction, on the other hand, you can always give.
Evaluate
The hidden idea here is that the right training method is the one that uses a reward or signal the owner can always provide. Without that idea, "you cannot always have treats" does not push us toward praise.
Goal
Find a principle that lines up with: train your dog using something you can always give.
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