A Study on the Preference of Risperidone Dosage Forms

This survey-based study explores which form of risperidone — a psychiatric medication — patients or their caregivers prefer: tablets, liquid, or long-acting injections. It aims to understand patient preferences to improve medication adherence. **You may be eligible if...** - You or your child has been diagnosed with schizophrenia, bipolar disorder, autism spectrum disorder, or intellectual disability - You are a patient or primary caregiver willing to voluntarily participate - You can read and understand Chinese **You may NOT be eligible if...** - You have difficulty reading or understanding Chinese - You decline to participate Talk to your doctor to see if this trial is right for you.