Practice Test 3

During a 2-month well-child visit, the mother of a healthy infant expresses hesitation about proceeding with the recommended immunizations. She says, "I saw a documentary that linked these shots to autism, and I'm very worried about permanent damage." The infant has no contraindications to vaccination.

The parents of an 18-month-old boy express concern about his development. They note that he does not point to objects to show interest, rarely makes eye contact, and spends long periods of time spinning the wheels on his toy cars. He has about five single words but does not use them consistently to communicate. He did not wave "bye-bye" until recently.