When research involves a 10-year-old child who declines to participate, what best describes the investigator's duty?

In research involving children, it is essential to prioritize the rights and autonomy of the child. When a 10-year-old child declines to participate in a study, the investigator's duty is to respect that decision without further persuasion. This recognition of the child’s refusal aligns with ethical considerations regarding informed consent and assent.

Researchers are obligated to ensure that participation is voluntary and based on a child's understanding and willingness to be involved. Forcing or coercing a child to participate after they have expressed their refusal could undermine the integrity of the research and violate ethical principles. This approach acknowledges the child's perspective and their right to decide whether to engage in research activities.

Other options imply actions that do not honor the child's autonomy. For instance, reinforcing the value of participation could be seen as pressuring the child, while seeking permission from parents immediately does not consider the child's expressed wishes. Re-evaluating the need for assent may also disregard the importance of the child's choice when they have already made their decision clear.