Inclusion Criteria:  Patients are suffered from unilateral hemispheric stroke and with a confirmation by neuroimaging evidence from either computer tomography (CT) or magnetic resonance imaging (MRI); Patients are either at subacute stage or chronic stage, i.e. the patients are suffered from post-stroke after one month, Patients are age 60 years old or above; Patients are medically stable; Patients are Cantonese speaking, Patients can communicate and to follow at least three-step commands, and; Patients are willing to give written consent.  Exclusion Criteria:  Patients are at acute stage, i.e the patients are suffered from stroke within 1 week; Patients with severe aphasia, swallowing disorders or other complications post-stroke that prevent them from successfully completing the assessments; Patients with any previously known psychiatric disorder or neurological disease excluding stroke; Patients are unable to given written consent.