Final answer:
Ricardo's ability to quickly remember phone numbers suggests he has eidetic memory, which is a form of photographic memory allowing for short-term vivid recollections without the typical interference that affects general memory recall.
Step-by-step explanation:
Ricardo, who can quickly look at a page of phone numbers once and remember all of them, probably has eidetic memory. This ability is a form of photographic memory that allows for vivid recollections, often of visual materials, such as phone numbers, images, or pages from a book, for a short period after exposure.
Unlike proactive interference, where old information hinders new information recall, or retroactive interference, where new information affects the recall of older information, eidetic memory provides near-accurate recall without such interference. This is distinct from procedural memory, which involves skills and tasks memorization rather than raw data or images.