I think it might be helpful to insert another category/type of competence, in addition (for example) to Competence to enter into a contract. I propose adding the following:
Competence to consent to medical treatment or health care Capacity to consent to health care is defined in several states by the Uniform Law Commission's Uniform Health Care Decisions Act as meaning an individual's ability to understand the significant benefits, risks, and alternatives to proposed health care and to make and communicate a healthcare decision. But California's more detailed test for a person's competence to consent to medical treatment [California Probate Code section 813] requires that a person be "able to do all of the following:
(1) Respond knowingly and intelligently to queries about that medical treatment.
(2) Participate in that treatment decision by means of a rational thought process.
(3) Understand all of the following items of minimum basic medical treatment information with respect to that treatment:
(A) The nature and seriousness of the illness, disorder, or defect that the person has.
(B) The nature of the medical treatment that is being recommended by the person’s health care providers.
(C) The probable degree and duration of any benefits and risks of any medical intervention that is being recommended by the person’s health care providers, and the consequences of lack of treatment.
(D) The nature, risks, and benefits of any reasonable alternatives."
If you decide that any of the foregoing text is useful, feel free to modify it any way you deem appropriate; feel free to use all or none or any part of it, and to use it any way you like.
By the way, California's Probate Code section 813 [1] was a codification of case law. I don't have the time today to show you the Legislature's committee reports which included citations to some of the cases being codified. If you want me to find that for you, please send an email to me at marc@marchankin.com. Marceepoo (talk) 20:27, 8 August 2019 (UTC)