Final answer:
Contracts by mentally incompetent individuals vary in their legal standing. If an individual has been deemed mentally incompetent by a court and assigned a guardian, contracts they enter are void. Without formal declaration, contracts are voidable if the person doesn't understand the contract, and valid and enforceable if they do.
Step-by-step explanation:
When assessing the validity of contracts by mentally incompetent persons, different legal standards apply based on the individual's mental capacity and any court determinations regarding their competence:
- Void: If a court has declared a person to be mentally incompetent and has appointed a legal guardian, any contract made by that person is void from the outset.
- Voidable: If a court has not declared a person mentally incompetent, but that person lacks the capacity to comprehend the subject matter, understand, and consequences of the agreement, then the contract is voidable at the person's option.
- Valid: If a court has not declared a person mentally incompetent and that person was able to understand the nature and effect of the contract at the time it was formed, then the contract is valid and enforceable.