Diagnostic Accuracy and Safety of the Attention-Deficit/Hyperactivity Disorder Auxiliary Evaluation System (AHEF) in Chinese Children Aged 6 to 12

Inclusion Criteria: * Age range: 6-12 years old, gender not restricted; * For children presenting for an initial ADHD diagnostic visit: presenting with common symptoms of ADHD such as inattention, hyperactivity, impulsivity, learning difficulties, behavioral problems, etc., and requiring a comprehensive assessment to confirm the diagnosis; Normal children: showing no obvious abnormal manifestations in family and school life, such as parents or teachers' initial assessment indicating basic health and normal neurodevelopmental behavioral performance, with no relevant medical history; * Normal intelligence (Wechsler Intelligence Scale for Children IQ ≥ 85); * The patient and/or their guardian have agreed to participate in the study and have signed the informed consent form; for participants aged 8 and above, a pediatric informed consent form must also be signed. Exclusion Criteria: * Suffering from mental disorders or other neurodevelopmental disorders (such as autism spectrum disorder, schizophrenia, bipolar disorder, depressive disorder, tic disorder, reading disorder, anxiety disorders or stress-related disorders that still meet the diagnostic criteria within the last 6 months), neurological diseases such as epilepsy, and brain organic diseases, etc.; * Acute stage of respiratory, digestive, circulatory, urinary, immune, endocrine system diseases or acute episodes of chronic diseases (such as common acute symptoms like fever, breathing difficulties, diarrhea, etc.) and tho…