Psychologists and psychiatrists both specialize in human behavior and mental conditions. The training for the two professions is different, however, and the two also work in slightly different fields. Both psychiatrists and psychologists play an important role in understanding how humans behave and interact with each other.

The primary difference between the two has to do with training. A psychiatrist is a medical doctor, meaning that he or she has gone to both undergraduate and medical school, and has followed with a professional residency in psychiatry. During the residency, the psychiatrist may choose a particular aspect to focus on, such as treating schizophrenia or depression. After qualifying as a doctor, a psychiatrist is able to prescribe medications and administer therapy such as electroconvulsive therapy (ECT), also known as shock therapy. A psychiatrist usually works with individual patients who need help.

A psychologist usually earns a doctoral degree, although a small number of careers are available in this field that only require a master's, such as an industrial-organizational psychologist. A psychologist who wants to treat patients will need an advanced degree and additional training so that he or she can become a clinical psychologist. A clinical psychologist can offer various types of therapy, depending on the training he or she has received.

There are, however, many different types of psychologist. Research psychologists work in laboratories and on field experiments to gain a deeper understanding of human behavior. Forensic psychologists lend their skills to the legal profession. Child psychologists and school counselors focus on working with children and young adults.

For patients, sometimes the primary difference between the two is a that a psychiatrist is able to prescribe psychotropic drugs. A psychiatrist rarely relies on drugs alone for therapy and treatment, but drugs can sometimes be an important component of treatment for troubled patients. Often, a psychiatrist also trains to offer a particular school of therapy to his or her patients, and may bring things like hypnotherapy, Jungian theory, and Gestalt therapy to the table.

A therapist or licensed clinical social worker may be a psychologist, but the terms are not interchangeable. The terms "therapist" or "counselor" are broad terms that may cover professionals with a variety of educational backgrounds. Although therapists cannot prescribe like a psychiatrist can, they usually have specialized training in treating patients and dealing with various situations. They also tend to be less expensive to see than psychiatrists, although not all insurance companies will cover visits to a therapist.

As with any medical professional, some research should be done before picking a psychiatrist or psychologist. Even if your doctor refers you to a specific practitioner, your therapy will not be productive if you do not feel comfortable with your provider. Take several sessions before making up your mind, but be aware of how you interact with the psychiatrist or psychologist, and decide whether or not you think you will work well together. Do not be afraid to ask for recommendations to other practitioners who can meet your specific needs; most mental health professionals want to see patients get better, regardless of who is treating them.