Long duration research refers to studies that involve collecting data or conducting experiments over an extended period of time, typically spanning several months or even years. This type of research allows researchers to observe trends, patterns, and changes that occur over time, providing a more comprehensive understanding of complex phenomena. Long duration research is commonly used in fields such as environmental science, psychology, and epidemiology, where gradual changes or long-term outcomes need to be studied. This research design requires careful planning, maintenance of data integrity, and ongoing monitoring to ensure the validity and reliability of the results.