A nurse is reinforcing teaching with the parents of a child who has ADHD and is taking methylphenidate. Which of the following statements by the parents indicates that the medication is effective?

Choice A reason: Increased caloric intake contradicts methylphenidate’s appetite-suppressant effect, a stimulant for ADHD. It boosts dopamine and norepinephrine, enhancing focus, not hunger. This suggests ineffectiveness or misreporting, as the drug typically reduces eating, misaligning with its pharmacological action on behavior.Choice B reason: A better grasp of reality is vague and unrelated to ADHD or methylphenidate’s core effects. The drug improves attention and impulse control, not perception of reality, which is more relevant to psychosis. This does not indicate efficacy for ADHD scientifically.Choice C reason: Weight loss is a common side effect of methylphenidate due to appetite suppression, not a direct efficacy marker. While it may occur, it does not confirm improved ADHD symptoms like focus, making it secondary to the drug’s therapeutic goal in treatment.Choice D reason: Completing homework on time reflects improved focus and impulse control, methylphenidate’s primary goals in ADHD. By increasing dopamine in the prefrontal cortex, it enhances executive function, enabling task completion, a direct measure of efficacy per scientific intent.