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Longitudinal Mechanisms of Sluggish Cognitive Tempo in ADHD: A Multi-Level Study from Behaviour to Brain

Longitudinal Mechanisms of Sluggish Cognitive Tempo in ADHD: A Multi-Level Study from Behaviour to Brain

Status
Recruiting
Phases
Unknown
Study type
Observational
Source
ChiCTR
Registry ID
ChiCTR2600128286
Enrollment
Unknown
Registered
2026-07-17
Start date
2025-11-22
Completion date
Unknown
Last updated
2026-07-20

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Attention Deficit Hyperactivity Disorder

Interventions

Health Control Group:None

Sponsors

Peking University Sixth Hospital
Lead Sponsor

Eligibility

Sex/Gender
All
Age
6 Years to 16 Years

Inclusion criteria

Inclusion criteria: ADHD Group (1) Meeting the diagnostic criteria for ADHD as outlined in the *Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition* (DSM-5), with initial clinical diagnosis established by a child psychiatrist (holding at least attending physician qualifications) through unstructured interviews with caregivers and patients, followed by verification using K-SADS-PL for clinical subtyping and comorbidity assessment. (2) Aged 6–16 years. (3) IQ >=70 as assessed by WISC-IV in children. (4) No prior pharmacotherapy for ADHD, or discontinuation of ADHD medications >=48 hours before enrollment. (5) No history of other psychiatric medication use. (6) Informed consent obtained from both participants (>=8 years) and their legal guardians. Health Control Group (1) WISC-IV assessed full-scale IQ >=70 in pediatric subjects. (2) Aged 6 to 16 years. (3) No prior exposure to psychotropic medications. (4) Clinical data documentation completed following informed consent from participants (>=8 years) and their legal guardians.

Exclusion criteria

Exclusion criteria: ADHD: (1) History or current diagnosis of childhood schizophrenia, intellectual disability, or epilepsy. (2) Severe somatic/neurological disorders, impaired consciousness, or current substance abuse/dependence. (3) Contraindications for MRI (including claustrophobia). Health Control Group: (1) Individuals with current or prior diagnoses of ADHD, schizophrenia, mood disorders, autism spectrum disorder, intellectual disability, epilepsy, or family history of these conditions were excluded. (2) Those with significant physical or neurological abnormalities, impaired consciousness, or active substance abuse/dependence were excluded. (3) Participants exhibiting >=4 symptoms in either the inattention or hyperactivity/impulsivity domains on the ADHD-IV 18-item symptom checklist were excluded. (4) Individuals with contraindications for MRI (including claustrophobia) were excluded.

Design outcomes

Primary

MeasureTime frame
Sluggish Cognitive Tempo;ADHD Symptoms;Somatic Complaints;Conduct Problems;Learning Problems;Emotional Symptoms;Social Interaction;Self-reported Depression Symptoms;Self-reported Anxiety Symptoms;Emotion Regulation Ability;Social Responsiveness;Alienation Questionnaire;Object Shift Ability;Spatial working memory capacity;Visual-motor Integration;Reaction Time;Ecological executive functions;fNIRS ;MRI;

Secondary

MeasureTime frame
Learning Ability;

Countries

Chine

Contacts

Public ContactQiujin Qian

Peking University Sixth Hospital

qianqiujin@bjmu.edu.cn+86 134 6633 9985

Outcome results

None listed

Source: ChiCTR (via WHO ICTRP) · Data processed: Jul 23, 2026