Dr. McClintock reviewed her schedule for the following week when she observed there were eight health supervision visits in 9 month old children. She recalled that these healthy children, whom she followed since birth, were up-to-date on their immunizations. As she reflected on the visits, it occurred to Dr. McClintock that this might be an ideal opportunity to use the time to assess developmental status and behavioral interactions. She could also ask questions about the families, including childcare arrangements, satisfaction with parenting and marriage relationships. Dr. McClintock considered the best use of the time available in order to have the most meaning to the children and their families. What lines of questioning or what screening tests might be most useful during the 9-month office visit?