To improve activities of daily living (ADL) and social functions is the important treatment plans and goals in participants with schizophrenia. Precise and effective measures of ADL and social functions are critical for clinicians to set up appropriate treatments plans, follow up participants' changes, and understand participants' progress. Three common measures of ADL and social functions used in participants with schizophrenia were the Comprehensive Occupational Therapy Evaluation Scale (COTES), the Activities of Daily Living Rating Scale third ed. (ADLRS-3), and the Social Functioning Scale. To investigators' knowledge, psychometric properties of these assessments have not been examined in participants with schizophrenia. Therefore, the purpose of the study is to (1) examine internal consistency and construct validity of these 3 assessments (the COTES, the ADLRS-3, and the Social Functioning Scale); and (2) calculate missing rate of self-report assessment (the ADLRS-3 and the Social Functioning Scale). Investigators expect that these results of internal consistency, construct validity and/or missing rate will provide empirical evidence for using these three measures in both clinical and research setting.