The research area of adults encompasses the study of individuals who have reached the age of maturity, typically defined as 18 years old or older. This area of research focuses on various aspects of adult development and behavior, including physical and mental health, cognitive abilities, social relationships, career development, and overall well-being. Researchers in this field may study factors influencing adult outcomes, such as education level, socioeconomic status, and life experiences. Overall, the research area of adults seeks to better understand the complexities and challenges faced by individuals as they navigate the various stages of adulthood.