Final answer:
Gloria is a social psychologist, as she studies how other people influence an individual's thoughts, feelings, and behaviors within a social context.
Step-by-step explanation:
Gloria, as a psychologist who studies the influence of other people on the way a person thinks, feels, and behaves, is most likely a social psychologist. Social psychology focuses on understanding how a person's behavior, thoughts, and feelings are influenced by the actual, imagined, or implied presence of others. As such, a social psychologist examines interpersonal and group relationships, social norms, and the power of social situations in shaping human behavior.
These professionals may devise studies on the impact of stereotypes, prejudice, discrimination, or group decision-making processes. Their goal is often to develop interventions that can positively shift social behavior and outcomes. Understanding the influence of social groups and contexts is central to social psychology, differentiating it from other psychology subfields that may focus more on individual traits or therapy.