Answer:
The four historical perspectives of psychology are related to the search for understanding the human mind and to the individual relationships and behaviors that humans have.
Explanation:
Each of the historical perspectives of psychology attempts to analyze and explain one strand of the human mind and how that strand influences the behavior, relationships, and mental processes that each of us possesses. Thus, the historical perspectives are related because in the end both have the same goal and together they can form the science that studies behavior (everything an organism does) and mental processes (subjective experiences inferred through behavior).
