Yes, licensed clinical psychologists can be referred to as "doctor." In many countries, including the United States, individuals who have earned a doctoral degree in psychology (usually a Doctor of Psychology, Psy.D., or Doctor of Philosophy, Ph.D., in Psychology) are entitled to use the title "Doctor."
A licensed clinical psychologist typically holds a doctoral degree in clinical psychology and has completed the necessary training and licensure requirements to practice independently as a psychologist. They are trained to assess, diagnose, and provide treatment for various mental health issues and psychological disorders.
However, it's important to note that the use of the title "doctor" can vary depending on the context. In professional settings, such as when a licensed clinical psychologist is providing psychological services to clients or patients, it is appropriate and common to address them as "Dr. Last Name" as a sign of respect and recognition of their professional qualifications.
In academic and research settings, it is also standard for individuals who hold a doctorate degree to be addressed as "doctor" when engaging in scholarly work or teaching at universities and other educational institutions.
It's worth mentioning that using the title "doctor" should not be confused with medical doctors (physicians) who hold an M.D. (Doctor of Medicine) or D.O. (Doctor of Osteopathic Medicine) degree. Both clinical psychologists and medical doctors may be referred to as "doctor," but they have different training and expertise in their respective fields.