Inclusion Criteria:  Age: 18- 65 years old at the time of enrollment Able to read and communicate in English and/or Chinese Able to give informed consent Has been diagnosed to have Schizophrenia (DSM-5 or ICD-10 F20 [except F20.81], Schizotypal (Personality) Disorder (DSM-5 or ICD-10 F21), or Schizoaffective Disorder (DSM-5 or ICD-10 F25), (Persistent) Delusional Disorder (DSM-5 or ICD-10 F22), Schizophreniform Disorder (DSM-5 or ICD-10 F20.81), Brief Psychotic Disorder (DSM-5) or Acute and Transient Psychotic Disorder (ICD-10 F23) Is receiving the combination with Abilify Maintena and brexpiprazole as treatment ≤8 weeks at the time of recruitment  Exclusion Criteria:  Age <18 years old Unable to read English or Chinese Unable to give informed consent Had been diagnosed to have Intellectual Disabilities (DSM-5) or Mental Retardation (ICD-10 F70-73)