20. 밑줄 친 부분에 들어갈 말로 알맞은 것은?

Over the last fifty years, all major subdisciplines in psychology have become more and more isolated from each other as training becomes increasingly specialized and narrow in focus. As some psychologists have long argued, if the field of psychology is to mature and advance scientifically, its disparate parts (for example, neuroscience, developmental, cognitive, personality, and social) must become whole and integrated again. Science advances when distinct topics become theoretically and empirically integrated under simplifying theoretical frameworks. Psychology of science will encourage collaboration among psychologists from various sub-areas, helping the field achieve coherence rather than continued fragmentation. In this way, psychology of science might act as a template for psychology as a whole by integrating under one discipline all of the major fractions/factions within the field. It would be no small feat and of no small import if the psychology of science could become a model for the parent discipline on how to combine resources and study science ______________________.

• 1
   from a unified perspective
• 2
   in dynamic aspects
• 3
   throughout history
• 4
   with accurate evidence