Adjunctive iTBS for First-Episode Schizophrenia

Inclusion Criteria: * Diagnosis of first-episode schizophrenia according to the Diagnostic and Statistical Manual of Mental Disorders, 5th Edition (DSM-5). * Age between 18 and 45 years. * No prior antipsychotic treatment or a washout period of at least 4 weeks for any previous psychotropic medications. * No contraindications to risperidone or iTBS. * Educational level of junior high school or above, capable of understanding and completing study assessments. Exclusion Criteria: * Comorbid severe psychiatric disorders or significant organic brain disease. * Pregnancy or lactation. * Severe alcohol or substance dependence. * Concurrent use of medications known to interact significantly with risperidone or affect cognitive function. * Conditions that could interfere with cognitive assessment. * Endocrine disorders, nutritional diseases, or epilepsy. * History of cranial surgery or presence of metal implants in the head. * Presence of biomedical devices (e.g., cardiac pacemakers).