Fidelity evaluation is a research area that focuses on assessing the degree to which an intervention or program is implemented as intended. In other words, fidelity evaluation examines whether the intervention is being delivered in the manner that was originally designed. This evaluation is important because it helps researchers and practitioners determine the effectiveness of the intervention and make any necessary adjustments to ensure that it is being implemented correctly. Fidelity evaluation can involve a variety of methods, such as observation, surveys, and interviews, to gather data on the fidelity of implementation. Ultimately, fidelity evaluation helps to ensure that interventions are being implemented consistently and effectively, and can provide valuable insights for improving future interventions.