Final answer:
In biology, researchers gather extensive information about individuals and their environments, including physiological conditions and the home environment. Case studies are a commonly used approach to understanding physical and psychological changes over a lifespan. However, caution must be taken with bias and generalizing conclusions.
Step-by-step explanation:
In the field of biology, a great deal of information is gathered about individuals and the various settings in which they live and work. This includes physiological conditions, physical settings, interactions with others, and the home environment. For example, developmental psychologists often use case studies to collect extensive information from one individual in order to understand physical and psychological changes over the lifespan. This approach can provide valuable insights into exceptional individuals, but researchers must be cautious of bias and generalization.