What is assent?

• A. A direct 'yes' response from any participant
• B. Verbal agreement from a participant aged 18 or older
• C. An observable sign of willingness to participate by the subject when nonverbal
• D. Affirmative agreement from a child when capable

Answer: (D)

Assent is a child’s affirmative agreement to participate in research when the child is capable of understanding what participation involves. In pediatric studies, researchers seek assent from the child in addition to parental permission, recognizing the child’s developing autonomy. This means the child actively agrees—by saying yes, nodding, or otherwise showing clear willingness—not just a lack of objection or an adult’s consent on their behalf. Assent complements parental consent and helps ensure participation is voluntary from the child’s perspective. If the child cannot understand the study or participate meaningfully, assent isn’t possible, and the guardian’s informed permission guides enrollment.