Mental capacity refers to a person’s ability to make informed decisions about their own health, welfare and finances. It involves the ability to understand, retain, and weigh relevant information, as well as to communicate a decision.
One’s ability to make decisions is not constant and can vary depending on the specific choice and circumstances. Although we may have the capability to make routine decisions, there may be instances where we lack the capacity to make important ones. Nevertheless, this does not mean that we cannot make smaller decisions, such as choosing our daily attire.
The mental capacity of a person may be triggered by a change in behaviour or circumstances, a diagnosis of a condition that affects their thinking ability, or concerns about their capacity, to possess capacity, an individual must be able to comprehend and utilize relevant information in order to make choices that affect their well-being.