Taking anti-HIV medication consistently and properly is a critical issue for patients with HIV. Drug regimens are complex; when regimens are not taken properly, HIV can become resistant to the drugs. Taking anti-HIV medication properly leads to improved health. Children and adolescents with HIV face unique challenges to taking HIV medication properly. This study will look at the relationship between how children cope with the responsibility for taking medication and the child's language, memory, attention, behavior, and academic skills. This study is open to children and adolescents who are currently enrolled in the PACTG 219C study (Long-Term Effects of HIV Exposure and Infection in Children).