Non-maleficence in AP Psychology
In AP Psychology, non-maleficence is the APA ethical principle that psychologists must avoid causing harm to the people they treat or study. It means steering clear of treatments or procedures that create unnecessary suffering, and it is one of the principles named in CED Topic 5.5.
This definition is part of Fiveable's AP Psychology review, which also has guided practice questions.
What is Non-maleficence?
Non-maleficence is the "first, do no harm" rule of psychology. A therapist or researcher has to avoid actions that would hurt the person in front of them, and has to work to prevent harm from happening. That harm could be physical, like a medication side effect. It could also be psychological, like distress caused by a careless technique.
The AP CED lists non-maleficence alongside fidelity, integrity, and respect for people's rights and dignity. These are the ethical principles established by the APA that psychologists in clinical or therapeutic situations must follow (5.5.B). Think of non-maleficence as the safety check that runs before any treatment decision. Before choosing a therapy, a drug, or a procedure, ask whether it is likely to do more harm than good. If it is, it fails the test.
Why Non-maleficence matters in AP® Psychology
Non-maleficence lives in Unit 5: Mental and Physical Health, specifically Topic 5.5 Treatment of Psychological Disorders. It directly supports AP Psych 5.5.B (Describe ethical principles in the treatment of psychological disorders), where it appears by name in the essential knowledge.
It also reaches beyond therapy. AP Psych Science Practice 2.D asks you to evaluate whether a research scenario followed appropriate ethical procedures, and avoiding harm to participants is the same idea in a research setting. So this one term gets you points in two places, the treatment unit and the research methods skill that runs through the whole course. For the full picture of therapies and their techniques, use the Topic 5.5 study guide. This page focuses on the ethics thread.
Keep studying AP® Psychology Unit 5
Official unit cheatsheet
open one-pagerHow Non-maleficence connects across the course
Research Ethics and Science Practice 2.D (Science Practice 2, all units)
Non-maleficence is the same rule whether you're treating a client or running a study. When a question asks if a research scenario was ethical (2.D), check whether participants were put at unnecessary risk. Exposing people to serious distress without protections is a non-maleficence problem, just in a lab instead of a therapist's office.
Biological Interventions and Side Effects (Unit 5)
Psychoactive medications can help, but they can also cause side effects like tardive dyskinesia, a movement disorder tied to dopamine regulation (5.5.F). Non-maleficence is why a clinician weighs those risks before prescribing. The lobotomy is the classic cautionary tale of a psychosurgery that caused serious harm.
Hypnosis and False Memories (Unit 5)
Research supports hypnosis for pain and anxiety, but not for retrieving accurate memories or age regression (5.5.E). Using hypnosis to "recover" memories could plant false ones and hurt the client. That makes it a clear real-world example of why avoiding harm means sticking to what the evidence supports.
Beneficence and Evidence-Based Treatment (Unit 5)
Beneficence is the push to actively help, while non-maleficence is the brake that stops you from hurting. Evidence-based interventions (5.5.A) serve both at once. They pick treatments that research shows actually work, so the client is helped and spared the harm of an ineffective or risky therapy.
Is Non-maleficence on the AP® Psychology exam?
Expect non-maleficence mostly in multiple-choice questions on therapy ethics. A typical stem reads like "What principle ensures that therapists avoid causing harm to their clients?" Your job is to match the scenario to the right principle. The trap is a neighboring principle. A question like "Which ethical principle ensures that a client's personal information is protected during therapy?" is about privacy and respect for people's rights and dignity, not non-maleficence.
No released FRQ has used the term verbatim. Still, the idea fits the kind of FRQ prompt that asks you to evaluate whether a research or treatment scenario was ethical (Science Practice 2.D). To earn the point, name the principle and tie it to a specific detail in the scenario, like a risky procedure or a harmful side effect.
Non-maleficence vs Beneficence
These two sound alike and both deal with client welfare, so they get mixed up constantly. Non-maleficence means don't cause harm. Beneficence means actively do good. A simple way to remember it is that "mal" means bad, as in malpractice, so non-maleficence is "no bad." If the scenario is about avoiding risk or damage, pick non-maleficence. If it's about working to benefit the client, pick beneficence.
Key things to remember about Non-maleficence
Non-maleficence is the ethical principle that psychologists must avoid causing harm to their clients and research participants.
The AP CED names non-maleficence in Topic 5.5 along with fidelity, integrity, and respect for people's rights and dignity, all established by the APA.
Non-maleficence means "do no harm," while beneficence means "actively do good," so look at whether the scenario is about avoiding damage or providing benefit.
Protecting a client's private information falls under respect for people's rights and dignity, not non-maleficence.
Side effects like tardive dyskinesia and harmful history like the lobotomy show why clinicians weigh risks before choosing a biological treatment.
The same harm-avoidance idea applies to research, so use it when Science Practice 2.D asks whether a study followed ethical procedures.
Frequently asked questions about Non-maleficence
What is non-maleficence in AP Psychology?
Non-maleficence is the APA ethical principle that psychologists must avoid harming the people they treat or study. It appears by name in CED Topic 5.5 (learning objective 5.5.B) as one of the ethical principles for treating psychological disorders.
What is the difference between non-maleficence and beneficence?
Non-maleficence means don't cause harm, and beneficence means actively work to help. A therapist who avoids a risky, unproven technique is showing non-maleficence. A therapist who builds a treatment plan to improve a client's well-being is showing beneficence.
Is confidentiality part of non-maleficence?
Not on the AP exam. A question about protecting a client's personal information is pointing to privacy and respect for people's rights and dignity. Save non-maleficence for questions about avoiding harm.
Is non-maleficence only about therapy, or does it apply to research too?
It applies to both. In Topic 5.5 it guides treatment choices, and in Science Practice 2.D you use the same idea to judge whether a study put participants at unnecessary risk.
What are examples of non-maleficence on the AP Psych exam?
Strong examples include weighing medication side effects like tardive dyskinesia before prescribing, and avoiding hypnosis for memory recovery, since research doesn't support it and it could create false memories. The lobotomy is the go-to example of a psychosurgery that violated the do-no-harm standard.
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