Final answer:
Dr. Brown is likely a Health Psychologist, a professional focused on how various factors contribute to health and wellness through the biopsychosocial model.
Step-by-step explanation:
Dr. Brown, who researches how biological, psychological, and social factors affect health behaviors such as handwashing and using sunblock, is most likely a Health Psychologist. Health Psychology is concerned with how these varied factors influence health and illness, and employs the biopsychosocial model to understand these complex interactions. These professionals play a critical role in public health by educating the public, proposing changes to public policy, and conducting research to improve health outcomes.
Health psychologists may explore the connection between genetic makeup and behavior patterns, or how psychological stress might influence an individual's well-being. They often develop interventions to change unhealthy behaviors and identify groups that are at an increased risk for negative health outcomes due to psychological or behavioral factors. For example, examining how stress levels differ among populations can help identify those at greater risk for health issues.