mental capacity

The patient lacks the mental capacity to make medical decisions.

患者缺乏做出医疗决定的意识能力。

The doctor assessed the patient's mental capacity before the procedure.

医生在手术前评估了患者的意识能力。

She is presumed to have full mental capacity unless proven otherwise.

除非有相反证据，否则推定其具有完全意识能力。

The court ruled that he lacked mental capacity at the time of signing.

法院裁定他在签署时缺乏意识能力。