A PMHNP uses the Autism Diagnostic Observation Schedule (ADOS) to aid in the diagnosis of an 8-year-old boy. She asks the parents to leave the room while she conducts the exam. The parents are hesitant to leave their child and want to know why it is important to leave him alone during the exam. What is the PMHNP's most appropriate response?

Choice A reason: While parental assistance may influence outcomes, framing it as “cheating” is inappropriate and may create unnecessary anxiety. Choice B reason: ADOS evaluates a child’s social and communication abilities independently. Parents must leave so the examiner can observe the child’s behaviors without external influence, ensuring accurate assessment. Choice C reason: Difficulty in observing the child is not the primary rationale; the goal is to evaluate independent behavior. Choice D reason: Parental presence may affect behavior, but the main purpose is not to prevent upset, but to accurately assess skills independently.