Final answer:
The Early Years (1893-1920) refer to significant developments in Medicine, particularly the study and understanding of psychology, a discipline which began to establish itself during this period.
Step-by-step explanation:
The Early Years (1893-1920) typically refer to the history of Medicine. This period saw several important developments across various disciplines, but particularly in medicine where reformers began to understand the workings of the mind due to the rapidly changing world. One of the notable aspects of this period was phrenology, an early form of science that relates to the future establishment of psychology, a branch of medical science. This was a time marked by efforts to understand mental faculties and personality through the study of the cranium which lays the groundwork for modern psychological practices. While phrenology is now discredited, it represents a critical early attempt to scientifically categorize and understand mental attributes.
During the early years in question, medicine, and more specifically the study of psychology within that field, began to gain recognition as a legitimate scientific discipline. The need to understand social changes and the natural world led to the establishment of various social sciences, with psychology paving the way for such academic fields. While this period is rich in developments across different domains, medicine, specifically the mental health aspect, is the most relevant field when speaking about the Early Years of 1893-1920.