Final answer:
Cana and Cam are using objectivity, which is crucial in drawing accurate conclusions in scientific research and ensures findings are based on empirical data, free from personal bias.
Step-by-step explanation:
The essential part of science that Cana and Cam are adhering to while examining the girl for a rare personality disorder is objectivity. In scientific research, especially in fields like psychology and sociology, it is crucial to draw conclusions based on empirical data rather than personal emotions or biases. This objective approach involves utilizing the scientific method to maintain consistency, focus, and objectivity throughout the research process. By working in this manner, researchers can ensure that their findings are accurate and reflective of the true nature of the phenomenon they are investigating, free from the influence of personal preference or societal pressures.