Concurrent Trials on Nature-Based Therapy for Inpatients in Dementia and Rehabilitation Medicine Wards

Inclusion Criteria: Patients with dementia: 1. Age 65-100 years old 2. Have a diagnosis of delirium/ dementia or both. 3. Have diagnosis of dementia with and without behavioural symptoms of dementia (BPSD) 4. Ability to communicate with the Nature-based Therapist (in languages such as English, Mandarin Chinese, Chinese dialects or Malay) 5. Manageable behavioural symptoms and able to focus attention for minimum of 30 minutes Rehabilitation Medicine patients: 1. Age 21-100 years old 2. Acquired brain injury with residual impairments, which can be either in the i) motor, and/or ii) cognitive domains, and/or iii) suspected or diagnosed mood disorders (including adjustment disorder, depression and anxiety disorders) -patients would then be stratified according to the category(s) of impairments both for consideration of interventions and for outcome measures/analysis 3. Additional Physical/Cognitive Criteria required will depend on range of specific therapeutic activities that could be prescribed/administered (eg.at least 1 upper limb with Manual Muscle Testing (MMT) of at least 3/5, with ability for active grasp/release, ability to sustain attention for the duration of the session, cognitive Functional Independence Measure (FIM) score of at least 25 points etc) Exclusion Criteria: 1. In isolation due to contact, droplet or airborne precautions 2. Unable to provide consent and lack of surrogate decision maker to provide consent 3. Poorly managed psychiatric or behaviour symptoms with threats to others surrounding them. 4. Age \< 21 years 5. Patients who are haemodynamically unstable. 6. Patients on strict bed rest