LECTURE NOTES
Capacity and Incapacity
Competency in the Civil Justice System
In the civil justice system this may involve competency to make a contract, understand
the terms of a will, competency to decide medical treatment, and competency to consent to
research.
Competency to Make a Contract
For a contract to be valid and enforceable the parties must be capable of understanding
their mutual obligations. Persons who are so disabled by mental illness that they are unable to
understand the nature of a transaction in a reasonable manner, usually also lack the legal capacity
Competency to Make a Will (testamentary capacity)
When a will is contested (i.e. its validity is officially doubted), it is usually because of one of two
possible factors. The first is that that the testator (i.e. the person making the will) lacked
testamentary capacity. This would be the case if the testator was somehow mentally
incompetent at the time of signing the will. The second reason is that the testator was subject to
undue influence such as coercion, manipulation, deception, compulsion, intimidation, etc.
Competency to Decide Regarding Treatment (informed consent)
Informed consent is the process by which a fully informed patient can participate in choices
about his or her health care. Some of the elements involved in informed consent include
reasonable alternatives to the proposed intervention, risks and benefits of the intervention, and
the patient’s understanding of the proposed treatment or intervention. The patient must be
considered competent in order for any consent to be held as being valid.