The ASQ developers recommend that programs obtain the consent of parents and caregivers when screening a child. If parents choose not to participate in the screening program, it is important to respect their wishes. Keep in mind that reluctance to participate is often due to a lack of understanding about why screening is necessary, what to expect, or how answers will be used. This article http://agesandstages.com/free-resources/articles/how-to-introduce-the-questionnaires/ provides tips for introducing ASQ questionnaires in ways that ease parents’ concerns. But, ultimately it is the right of the parents to decide not to participate in the program. If parents decline, it is recommended that you try again in a few months.