As an assistant psychologist, your responsibilities involve supporting a psychologist with clinical, research, or administrative tasks. You work under a more senior psychologist to evaluate a patient and their treatment plan, conduct assessments, and administer other testing as needed. Staff psychologists may then use your reports to decide on treatment for a patient. Assistant psychologists are often newly licensed psychologists. This position is similar to a psychology assistant, who may be in the process of earning their degree and license in psychology.