Capacity and Supported Decisions

#Capacity depends on the decision

Decision-making capacity concerns a person's ability to make a particular decision at a particular time. Many frameworks consider whether someone can understand relevant information, retain it long enough, use or weigh it and communicate a choice. The exact legal definition and assessment requirements vary between jurisdictions.

Capacity is not determined solely by age, diagnosis, disability, appearance or whether others agree with a choice. A person may be able to make one decision but not another. Pain, distress, illness, medication effects or communication barriers may affect decision-making, sometimes temporarily, and should not be overlooked.

#Support before assumptions

Supported decision-making helps people participate in choices affecting their lives. Support may include plain-language explanations, communication aids, interpreters, a quieter setting, more time or a trusted person. Where circumstances allow, choosing a better time for discussion may make a meaningful difference to someone's ability to engage.

Support should reflect the person's preferences and avoid steering them toward someone else's preferred answer. Difficulty speaking does not necessarily mean difficulty understanding. Those providing support also need to consider privacy, possible conflicts of interest and whether the person feels able to disagree without losing assistance.

#When another decision process is needed

If a person cannot make the relevant decision despite appropriate support, another lawful decision process may be needed. Different jurisdictions use different arrangements involving authorised representatives, previously expressed wishes, advance documents or other decision standards. A relative or carer does not automatically have authority in every setting.

Even when another person has legal authority, the individual should remain involved as far as possible. Their wishes, values and communication still matter. Any limits on their decision-making role should be justified under the applicable framework, documented and reviewed when the decision or circumstances change.

#Common misunderstandings

Decision-making capacity is not the same as agreeing with a clinician or choosing the option others consider safest. A decision that seems unwise does not, by itself, show that someone cannot make it. The focus is on how the person makes the particular decision, not whether others approve of the outcome.

A diagnosis, disability, age or difficulty speaking also does not automatically establish a lack of capacity. Communication barriers can hide what someone understands. Accessible information, interpreters, communication aids and enough time may help a person take part more fully.

Capacity is not necessarily permanent or all-or-nothing. Someone may be able to make one decision but need a different process for another. Their abilities may also change over time.

Support is not permission to pressure someone or replace their preferences. A supporter can help clarify information and communicate wishes, while keeping the person’s own decision central.

#Questions worth asking a clinician

• How will you assess my capacity to make this particular decision, rather than judging my ability to make all decisions?
• Can you explain my options in simpler language or use pictures to help me understand?
• Can someone I trust join our discussion to help me understand and communicate my choice?
• Could pain, medication, stress, or tiredness affect my decision-making, and can we address these before assessing my capacity?
• If I need support to communicate, how will you make sure the decision reflects my wishes?