Yes, using the next lower age interval is recommended. A provider can sample items from the lower age interval and see if the child can do those skills. It may be possible that the parents do not read English or understand the questions. A phone call is recommended to determine whether the parents need a translated questionnaire or an interpreter, or if the parents have questions about the ASQ process. If the parents seem to understand the process and are able to read and understand the questionnaire, it is recommended that the child be referred for further assessment.