Who generally sets the observation time or interval length in partial interval recording?

In partial interval recording, the observation time or interval length is typically determined by the supervisor. This is because supervisors are responsible for establishing protocols that ensure data collection is effective and aligned with the goals of the behavior intervention plan. They consider various factors such as the behavior being observed, the context of the intervention, and the overall objectives of the therapy when setting these intervals. This systematic approach helps to standardize data collection across different practitioners and settings, leading to more reliable and valid results in behavior analysis.

Other individuals, such as teachers, parents, and students, may have valuable insights on the behavior and its context, but the ultimate decision regarding the interval length lies with the supervisor to maintain consistency and integrity in the data collection process.