Anorexia nervosa is an eating disorder characterized by an intense fear of gaining weight or becoming fat, a distorted body image, and refusal to maintain a minimally normal body weight, leading to severe food restriction and self-starvation (AP Psych Topic 8.6).
Anorexia nervosa is an eating disorder built around two core features. First, there's an intense, persistent fear of gaining weight or becoming fat. Second, there's a distorted body image, meaning the person genuinely perceives themselves as overweight even when they are dangerously underweight. Together, these drive severe restriction of food intake and refusal to maintain a minimally normal body weight.
For the AP exam, the defining behavior is restriction. People with anorexia drastically limit how much they eat, which leads to excessive weight loss, malnutrition, and serious physical consequences (slowed heart rate, loss of bone density, hormonal disruption). The distorted self-perception is what makes the disorder so dangerous. The thinner the person gets, the more their perception insists they still need to lose weight. That feedback loop is why anorexia has one of the highest mortality rates of any psychological disorder.
Anorexia nervosa lives in Topic 8.6 (Feeding and Eating, Substance and Addictive, and Personality Disorders) in Unit 8 of AP Psychology. You're expected to identify the symptoms of feeding and eating disorders and, crucially, tell them apart. The classic AP move is to give you a behavioral description and ask whether it's anorexia, bulimia, or binge-eating disorder. Anorexia is the restriction disorder. If the scenario describes someone severely limiting food intake out of fear of weight gain, that's your answer. This term also connects forward to Unit 8's treatment content, since cognitive-behavioral therapy targets the distorted thoughts ("I'm fat") that maintain the disorder.
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Bulimia Nervosa (Unit 8)
These two are tested side by side constantly. Both involve intense fear of weight gain, but the behavior pattern is opposite. Anorexia is restriction (eating very little), while bulimia is a binge-purge cycle (eating a lot, then compensating with vomiting or laxatives). Another quick cue is body weight. People with anorexia are significantly underweight; people with bulimia are often at or near normal weight.
Body Dysmorphia (Unit 8)
Distorted body image is the cognitive engine of anorexia. The person's perception of their own body doesn't match reality, so no amount of weight loss ever feels like enough. This is why anorexia is considered a psychological disorder and not just a dieting problem. The thinking is distorted, not just the eating.
Malnutrition and the Starvation Response (Unit 8)
Self-starvation triggers real biological consequences. The body slows metabolism, conserves energy, and starts breaking down its own tissue. This connects anorexia back to the biological bases of behavior, since the disorder shows how a psychological belief (fear of fat) can override the body's hunger and homeostasis systems.
Cognitive-Behavioral Therapy (Unit 8)
CBT is the go-to treatment connection for anorexia on the AP exam. Since the disorder is maintained by distorted cognitions about body size and weight, CBT works by challenging those thoughts while also changing eating behaviors. If an exam question pairs anorexia with a treatment, CBT is the safest match.
Anorexia nervosa shows up almost entirely in multiple-choice identification questions, and they nearly always test it against bulimia nervosa. A typical stem describes the behavior, something like "an intense fear of gaining weight, leading to severe restriction of food intake," or "refusal to maintain a minimally normal body weight," and asks you to name the disorder. Your job is to match the behavior pattern to the right label. Restriction and being underweight means anorexia. Binge-purge cycles mean bulimia. Bingeing without purging means binge-eating disorder. No released FRQ has centered on anorexia by name, but eating disorders can appear in an AAQ or EBQ scenario about diagnosis or treatment, where you'd connect the symptoms to a therapy like CBT.
Both disorders involve an intense fear of gaining weight, which is exactly why the AP exam loves pairing them. The difference is the behavior. Anorexia is defined by restriction, meaning the person eats very little and becomes severely underweight. Bulimia is defined by recurrent binge eating followed by compensatory behaviors like forced vomiting or laxative use, and the person usually stays at a near-normal weight. Quick test for any MCQ scenario. If the person is starving themselves, it's anorexia. If they're bingeing and purging, it's bulimia.
Anorexia nervosa is an eating disorder defined by intense fear of weight gain, distorted body image, and refusal to maintain a minimally normal body weight.
The defining behavior of anorexia is severe restriction of food intake, which separates it from bulimia's binge-purge pattern.
People with anorexia are significantly underweight, while people with bulimia are typically at or near normal weight. That contrast is a common MCQ trap.
Distorted body image means the person perceives themselves as overweight even when dangerously thin, which is why the disorder persists despite extreme weight loss.
Anorexia falls under Topic 8.6 in Unit 8, and cognitive-behavioral therapy is the treatment most often paired with it because it targets the distorted thoughts driving the restriction.
Self-starvation causes real biological harm, including malnutrition and the body's starvation response, making anorexia one of the deadliest psychological disorders.
Anorexia nervosa is an eating disorder marked by an intense fear of gaining weight, a distorted body image, and refusal to maintain a minimally normal body weight, leading to severe food restriction and self-starvation. It's covered in Topic 8.6 of Unit 8.
Anorexia involves restriction (eating very little) and severe underweight, while bulimia involves binge eating followed by purging through vomiting or laxatives, usually at a near-normal body weight. Both share the fear of weight gain, so the behavior pattern is what distinguishes them on the exam.
No. Anorexia is a psychological disorder driven by distorted body perception, meaning the person genuinely sees themselves as overweight even when dangerously thin. Dieting stops when a goal is reached; anorexia's distorted thinking means no weight is ever low enough.
The hallmark of anorexia is restriction, not bingeing and purging. For AP purposes, if a question describes recurrent binge-purge cycles, the answer is bulimia nervosa. Anorexia scenarios describe severe limiting of food intake out of fear of weight gain.
Cognitive-behavioral therapy (CBT) is the treatment most commonly linked to anorexia because it directly challenges the distorted thoughts about body size and weight that maintain the disorder, while also changing eating behaviors.