James is an 18-year old college freshman. She has missed almost all her classes for the past month, and she spends most of time in her bedroom. Frequently, she is still no dressed when her parents come home from work, and she often hasn’t eaten anything all day. She thinks her whole life is a failure, and she blames herself for being a social misfit woman everyone hates. Janae’s symptoms are MOST consistent with those seen in: