How many articles are used during evidence testing?

• A. 4
• B. 2
• C. 1
• D. 3

Answer: (B)

Evidence testing centers on the dog’s ability to distinguish a target scent from a non-target. Using two articles provides a clean, side-by-side comparison: one article carries the target odor and the other serves as a control. This setup lets you see if the dog reliably alerts on the correct item and can discriminate away from a non-target or odor-free article. Keeping the test to two items keeps things simple and minimizes confusing odors or cues that could cloud the result. If there were more articles, it would be harder to know what the dog is responding to, and if there were only one article, there’d be no way to confirm true discrimination. So, two articles are used during evidence testing.