Which statement indicates an adolescent may not fully understand the effects of antidepressants?

The statement indicating that an adolescent may not fully understand the effects of antidepressants is the one expressing the belief that they will feel better about themselves after just a week.

This reflects a common misconception about the timeline of antidepressant efficacy. Many adolescents may not be aware that antidepressants typically take at least several weeks to demonstrate their full therapeutic effects. It often takes longer for noticeable improvements in mood, energy levels, and other symptoms to occur as the medication gradually adjusts neurotransmitter levels in the brain.

In contrast, the other statements indicate a more nuanced understanding of how antidepressants might affect various aspects of their lives. Wanting to eat more, noting improved sleep of about 6 hours, and feeling it's easier to get up in the morning all imply a recognition of gradual changes that may occur during treatment. These statements suggest the adolescent is observing incremental improvements rather than expecting an immediate, significantly better mood, highlighting a more realistic perspective on the treatment process.