I understand that evaluating the interventions’ effectiveness is a key component in cognitive behavioral theory. But how to do the evaluation?

Welcome.

Thank you for the clear explanation.

At the assessment stage, the social worker gathers information about the problem in terms of intensity, duration, and frequency. This information serves as the baseline data, which illustrates the extent of the problem before an intervention is implemented. The social worker is advised to continue collecting the intensity, duration, and frequency of the problem throughout the work to determine whether the intervention is working or when to incorporate a new intervention if the existing one is not working. Keeping track of the intensity, duration, and frequency of the problem can also serve as a useful tool to clients by demonstrating the progress they have made or the work still to be achieved.