Leigh is a diligent clinician. in order to provide her clients with the best therapy she can provide she keeps up to date on the latest psychotherapy research. she also takes into consideration her patients' values, characteristics, preferences, and circumstances. finally, she is also mindful of her own expertise. leigh is using what approach in clinical decision making

Leigh is using "evidence based" decision making.

Clinical decision making (CDM) is a functioning, intentional, and unconstrained process that happens inside the clinician's brain amid a cooperation with a patient. Before, CDM was thought to depend only on the clinical experience of the professional or the specialist's connections with associates and specialists in the field.  

Evidence Based Decision-Making is a procedure for settling on choices about a program, practice, or arrangement that is grounded in the best accessible research proof and educated by experiential proof from the field and important contextual evidence.