The list author says: "These books are great for dialogic reading (see my parenting books list). If you interact with your child (point things out and ask questions) while reading it will really help his or her language skills (of course talking to him or her often also helps)! My daughter loved these books and requested them daily when she was a baby. My son is just starting to get interested in books and likes them as well."
"Rhyme scheme is great for very young babies and pictures are good for older babies because there are a lot of objects to point out on each page (ball, shoe, train, car, etc.). At first I thought there was too much going on in the pictures but it is actually easy for older babies to point out objects."