Situation: A nurse works in the emergency room and pediatric ward of a provincial hospital, where a parent or other family member usually stays at each child's bedside and takes part in care. In pediatric practice, parents give consent for their child's care. From about which developmental period should the nurse also seek the child's own assent?

Parents or legal guardians give consent for a minor's care, while the nurse seeks the child's assent, or agreement, from about school age. School-age children can understand simple explanations of what will happen and why. Adolescents' growing autonomy is respected by involving them directly in decisions.

Developmental Basis for Seeking Assent
In pediatric care, informed consent is legally provided by a parent or guardian, but assent is the child’s own agreement to participate in care or treatment. The ethical principle of respect for persons requires that children be involved in decisions as soon as they are developmentally able to understand basic information about what will happen and why ^[1]. Assent is not the same as consent; it is a developmentally appropriate process that supports the child’s emerging self-determination while the parent retains legal decision-making authority.

Why School-Age Is the Appropriate Starting Point
The school-age period (approximately 6 to 12 years) marks a major cognitive shift. Children in this stage move from the preoperational, egocentric thinking of the preschool years into concrete operational thought. They can follow a simple sequence of events, understand cause and effect in a concrete way, and ask relevant questions about a procedure. This allows them to comprehend a basic explanation of what will be done, why it is needed, and what they can expect to feel ^[1][3]. Meaningful assent requires the child to understand the information, appreciate that it applies to them, and express a voluntary choice—abilities that are not reliably present before school age.

The three components of assent—information sharing, comprehension, and voluntariness—must be adapted to the child’s developmental level ^[1]. A toddler cannot comprehend a treatment explanation or separate their own wishes from the parent’s. A preschooler may understand very simple words but still interprets events magically and cannot consistently appreciate consequences. By school age, the child can process concrete explanations and give a genuine “yes” or “no” that reflects their own understanding ^[3][4].

How Assent Differs Across Developmental Periods

Developmental Period	Cognitive Capacity	Role in Assent	Nursing Implication
Toddler (1–3 years)	Sensorimotor; no logical reasoning; limited language	Cannot provide assent; parent gives consent	Prepare parent; use distraction and comfort measures
Preschool (3–5 years)	Preoperational; magical thinking; egocentric	May be informed in simple terms but cannot give true assent	Explain immediately before procedure using concrete objects
School-age (6–12 years)	Concrete operational; understands cause and effect	Able to provide developmentally appropriate assent	Seek assent after explaining what will happen and why
Adolescent (13 years and older)	Formal operational; abstract reasoning; growing autonomy	Assent becomes more robust; may approach consent in some settings	Involve directly in decisions; respect emerging autonomy

Clinical Application in the Pediatric Ward
In a setting where family members remain at the bedside and participate in care, the nurse should not assume that a quiet child agrees with the plan. Key point! Seeking assent from a school-age child means giving a simple, honest explanation and then asking for the child’s agreement—not merely telling the child what will happen. If the child refuses, the nurse should pause, explore the reason, and collaborate with the parent and healthcare team. This does not override parental consent, but it protects the child’s developing autonomy and builds trust ^[3].

Watch out! Do not confuse assent with consent. Consent is the legal authorization given by the parent or guardian. Assent is the child’s agreement, and it becomes ethically meaningful around school age. A toddler or preschooler may cooperate or resist, but neither response represents informed assent because the child cannot yet comprehend the relevant information ^[1][4].

In summary, the nurse should begin seeking the child’s own assent during the school-age period, when concrete operational thinking allows the child to understand simple explanations, appreciate that the information applies to them, and express a voluntary choice ^[1][3].

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