Which type of therapy would be least likely to focus on biological procedures?

Insight therapy is focused on helping individuals understand their feelings, thoughts, and behaviors, often through dialogue and exploration of past experiences and emotional conflicts. This type of therapy emphasizes personal insight and self-understanding rather than biological procedures.

In contrast, biomedical therapy directly involves medical interventions, such as medication or procedures, aimed at treating psychological disorders primarily through biological means. Psychopharmacology specifically deals with the study and application of medications for treating mental health issues, further highlighting its strong biological focus. Action therapy, while often addressing behavioral aspects, can also include biological considerations, especially if it involves interventions that alter physiological responses.

Thus, insight therapy stands out as the approach least likely to incorporate biological procedures, making it the appropriate choice in this context.