Trial Outcomes & Findings for Social Virtual-reality on Enhancing Social Interaction Skills in Children With Attention-deficit/Hyperactivity Disorder (NCT NCT05778526)

Last Updated: 2025-03-28

Results Overview

The attendance of the participants during the trainings will be recorded. To verify the validity of the findings, training non-adherence of the participants will be terminated which will be stated in the consent form. The absence of any training session will be considered as non-adherence.

Recruitment status

COMPLETED

Study phase

Target enrollment

90 participants

Primary outcome timeframe

After 3 weeks

Results posted on

2025-03-28

Participant Flow

Participant milestones

Participant milestones
Measure	Social VR Intervention Social VR intervention is developed to enhance the social interaction skills of children. The participants will wear a head-mounted display for the Social VR intervention. Each session of the Social VR intervention lasts for a maximum of 20 minutes to ensure the participants focus on the intervention and prevent causing any physical effect. The duration will be adjusted depending on the emotion of the participants during the intervention. The Social VR intervention will mainly help the participant to enhance their social interaction skills and executive function. The intervention contains three real-life virtual scenarios, including (1) classroom and playground, (2) MTR station and compartment, and (3) supermarket and restaurant. One scenario will be adopted in each session. The sequences of the scenarios used in each session will be the same for all participants. Virtual reality: There are a total of 12 training sessions for 3 weeks (4 sessions per week). Each session of the Social VR intervention lasts for a maximum of 20 minutes. The intervention contains three real-life virtual scenarios, including (1) a classroom and playground, (2) an MTR station and compartment, and (3) a supermarket and restaurant.	Traditional Social Skills Training An experienced SEN teacher will teach the participants social interaction skills through tradidactic instructions and role-play activities. Four modules will be covered in the 3-week training: (1) how to introduce yourself and basic social skills; (2) how to listen to others; (3) how to share with others; (4) learn to know how people feel and how to empathise. These modules have been applied in many studies (Braswell \& Bloomquist, 1991; Huang et al., 2015). The content of this training will be as similar as possible to the Social VR training. The training lasts 20 minutes which depends on the emotion of the participants. Traditional social skills training: There are a total of 12 training sessions for 3 weeks (4 sessions per week). Each session lasts for a maximum of 20 minutes. Four modules will be covered in the 3-week training: (1) how to introduce yourself and basic social skills; (2) how to listen to others; (3) how to share with others; (4) learn to know how people feel and how to empathise.	Waitlist Control Group The participants in this group will receive no training and they can participate in the social VR training after the intervention period. To ensure the consistency of the experiment, the participants are not allowed to initiate or change their pharmacological treatment during the 3-week intervention period.
Overall Study STARTED	30	30	30
Overall Study COMPLETED	30	29	19
Overall Study NOT COMPLETED	0	1	11

Reasons for withdrawal

Reasons for withdrawal
Measure	Social VR Intervention Social VR intervention is developed to enhance the social interaction skills of children. The participants will wear a head-mounted display for the Social VR intervention. Each session of the Social VR intervention lasts for a maximum of 20 minutes to ensure the participants focus on the intervention and prevent causing any physical effect. The duration will be adjusted depending on the emotion of the participants during the intervention. The Social VR intervention will mainly help the participant to enhance their social interaction skills and executive function. The intervention contains three real-life virtual scenarios, including (1) classroom and playground, (2) MTR station and compartment, and (3) supermarket and restaurant. One scenario will be adopted in each session. The sequences of the scenarios used in each session will be the same for all participants. Virtual reality: There are a total of 12 training sessions for 3 weeks (4 sessions per week). Each session of the Social VR intervention lasts for a maximum of 20 minutes. The intervention contains three real-life virtual scenarios, including (1) a classroom and playground, (2) an MTR station and compartment, and (3) a supermarket and restaurant.	Traditional Social Skills Training An experienced SEN teacher will teach the participants social interaction skills through tradidactic instructions and role-play activities. Four modules will be covered in the 3-week training: (1) how to introduce yourself and basic social skills; (2) how to listen to others; (3) how to share with others; (4) learn to know how people feel and how to empathise. These modules have been applied in many studies (Braswell \& Bloomquist, 1991; Huang et al., 2015). The content of this training will be as similar as possible to the Social VR training. The training lasts 20 minutes which depends on the emotion of the participants. Traditional social skills training: There are a total of 12 training sessions for 3 weeks (4 sessions per week). Each session lasts for a maximum of 20 minutes. Four modules will be covered in the 3-week training: (1) how to introduce yourself and basic social skills; (2) how to listen to others; (3) how to share with others; (4) learn to know how people feel and how to empathise.	Waitlist Control Group The participants in this group will receive no training and they can participate in the social VR training after the intervention period. To ensure the consistency of the experiment, the participants are not allowed to initiate or change their pharmacological treatment during the 3-week intervention period.
Overall Study Lost to Follow-up	0	1	3
Overall Study Protocol Violation	0	0	8

Baseline Characteristics

Social Virtual-reality on Enhancing Social Interaction Skills in Children With Attention-deficit/Hyperactivity Disorder

Baseline characteristics by cohort

PRIMARY outcome

Timeframe: After 3 weeks

Outcome measures

Outcome measures
Measure	Social VR Intervention n=30 Participants Social VR intervention is developed to enhance the social interaction skills of children. The participants will wear a head-mounted display for the Social VR intervention. Each session of the Social VR intervention lasts for a maximum of 20 minutes to ensure the participants focus on the intervention and prevent causing any physical effect. The duration will be adjusted depending on the emotion of the participants during the intervention. The Social VR intervention will mainly help the participant to enhance their social interaction skills and executive function. The intervention contains three real-life virtual scenarios, including (1) classroom and playground, (2) MTR station and compartment, and (3) supermarket and restaurant. One scenario will be adopted in each session. The sequences of the scenarios used in each session will be the same for all participants. Virtual reality: There are a total of 12 training sessions for 3 weeks (4 sessions per week). Each session of the Social VR intervention lasts for a maximum of 20 minutes. The intervention contains three real-life virtual scenarios, including (1) a classroom and playground, (2) an MTR station and compartment, and (3) a supermarket and restaurant.	Traditional Social Skills Training n=30 Participants An experienced SEN teacher will teach the participants social interaction skills through tradidactic instructions and role-play activities. Four modules will be covered in the 3-week training: (1) how to introduce yourself and basic social skills; (2) how to listen to others; (3) how to share with others; (4) learn to know how people feel and how to empathise. These modules have been applied in many studies (Braswell \& Bloomquist, 1991; Huang et al., 2015). The content of this training will be as similar as possible to the Social VR training. The training lasts 20 minutes which depends on the emotion of the participants. Traditional social skills training: There are a total of 12 training sessions for 3 weeks (4 sessions per week). Each session lasts for a maximum of 20 minutes. Four modules will be covered in the 3-week training: (1) how to introduce yourself and basic social skills; (2) how to listen to others; (3) how to share with others; (4) learn to know how people feel and how to empathise.	Waitlist Control Group n=30 Participants The participants in this group will receive no training and they can participate in the social VR training after the intervention period. To ensure the consistency of the experiment, the participants are not allowed to initiate or change their pharmacological treatment during the 3-week intervention period.
Acceptability and Compliance	100 Percentage of sessions attended	96.6 Percentage of sessions attended	63.3 Percentage of sessions attended

SECONDARY outcome

Timeframe: 3 weeks post-intervention

Population: Data were collected from all participants who completed the assessments, including those from the waitlist control group who did not receive the intervention. This resulted in an analysis population of 30 participants in each group: 30 in the Social VR Intervention group, 30 in the Traditional Social Skills Training group, and 30 in the Waitlist Control group.

This assessment utilizes the Riggio Social Skills Inventory to objectively evaluate participants' social interaction skills. The total score ranges from 10 to 40, where higher scores indicate better social interaction skills. The inventory consists of 10 items, each scored on a scale from 1 (Never) to 4 (Always). Scores for each item are summed to compute a total score, with higher total scores representing better outcomes in social interaction skills. The inventory includes subscales that measure aspects of verbal and non-verbal communication.

Outcome measures

Outcome measures
Measure	Social VR Intervention n=30 Participants Social VR intervention is developed to enhance the social interaction skills of children. The participants will wear a head-mounted display for the Social VR intervention. Each session of the Social VR intervention lasts for a maximum of 20 minutes to ensure the participants focus on the intervention and prevent causing any physical effect. The duration will be adjusted depending on the emotion of the participants during the intervention. The Social VR intervention will mainly help the participant to enhance their social interaction skills and executive function. The intervention contains three real-life virtual scenarios, including (1) classroom and playground, (2) MTR station and compartment, and (3) supermarket and restaurant. One scenario will be adopted in each session. The sequences of the scenarios used in each session will be the same for all participants. Virtual reality: There are a total of 12 training sessions for 3 weeks (4 sessions per week). Each session of the Social VR intervention lasts for a maximum of 20 minutes. The intervention contains three real-life virtual scenarios, including (1) a classroom and playground, (2) an MTR station and compartment, and (3) a supermarket and restaurant.	Traditional Social Skills Training n=30 Participants An experienced SEN teacher will teach the participants social interaction skills through tradidactic instructions and role-play activities. Four modules will be covered in the 3-week training: (1) how to introduce yourself and basic social skills; (2) how to listen to others; (3) how to share with others; (4) learn to know how people feel and how to empathise. These modules have been applied in many studies (Braswell \& Bloomquist, 1991; Huang et al., 2015). The content of this training will be as similar as possible to the Social VR training. The training lasts 20 minutes which depends on the emotion of the participants. Traditional social skills training: There are a total of 12 training sessions for 3 weeks (4 sessions per week). Each session lasts for a maximum of 20 minutes. Four modules will be covered in the 3-week training: (1) how to introduce yourself and basic social skills; (2) how to listen to others; (3) how to share with others; (4) learn to know how people feel and how to empathise.	Waitlist Control Group n=30 Participants The participants in this group will receive no training and they can participate in the social VR training after the intervention period. To ensure the consistency of the experiment, the participants are not allowed to initiate or change their pharmacological treatment during the 3-week intervention period.
Riggio Social Skills Inventory Assessment	38.20 score on a scale Standard Deviation 2.83	30.63 score on a scale Standard Deviation 6.57	24.50 score on a scale Standard Deviation 5.17

SECONDARY outcome

Timeframe: 3 weeks post-intervention

Population: Data were collected from the guardians of all participants who completed the SSRS-P assessments, resulting in 30 participants in each group.

This assessment evaluates participants' self-control, assertiveness, and initiative and cooperation. The SSRS-P consists of 3 subscales with a total of 31 items. A 3-point Likert scale (1 = Never, 2 = Sometimes, 3 = Often) is used for scoring. The total score ranges from 31 to 93, where higher scores indicate better social skills. Scores for each subscale are summed, contributing to the total score. The SSRS-P is a validated instrument commonly adopted in clinical trials of psychiatric and neurological disorders.

Outcome measures

Outcome measures
Measure	Social VR Intervention n=30 Participants Social VR intervention is developed to enhance the social interaction skills of children. The participants will wear a head-mounted display for the Social VR intervention. Each session of the Social VR intervention lasts for a maximum of 20 minutes to ensure the participants focus on the intervention and prevent causing any physical effect. The duration will be adjusted depending on the emotion of the participants during the intervention. The Social VR intervention will mainly help the participant to enhance their social interaction skills and executive function. The intervention contains three real-life virtual scenarios, including (1) classroom and playground, (2) MTR station and compartment, and (3) supermarket and restaurant. One scenario will be adopted in each session. The sequences of the scenarios used in each session will be the same for all participants. Virtual reality: There are a total of 12 training sessions for 3 weeks (4 sessions per week). Each session of the Social VR intervention lasts for a maximum of 20 minutes. The intervention contains three real-life virtual scenarios, including (1) a classroom and playground, (2) an MTR station and compartment, and (3) a supermarket and restaurant.	Traditional Social Skills Training n=30 Participants An experienced SEN teacher will teach the participants social interaction skills through tradidactic instructions and role-play activities. Four modules will be covered in the 3-week training: (1) how to introduce yourself and basic social skills; (2) how to listen to others; (3) how to share with others; (4) learn to know how people feel and how to empathise. These modules have been applied in many studies (Braswell \& Bloomquist, 1991; Huang et al., 2015). The content of this training will be as similar as possible to the Social VR training. The training lasts 20 minutes which depends on the emotion of the participants. Traditional social skills training: There are a total of 12 training sessions for 3 weeks (4 sessions per week). Each session lasts for a maximum of 20 minutes. Four modules will be covered in the 3-week training: (1) how to introduce yourself and basic social skills; (2) how to listen to others; (3) how to share with others; (4) learn to know how people feel and how to empathise.	Waitlist Control Group n=30 Participants The participants in this group will receive no training and they can participate in the social VR training after the intervention period. To ensure the consistency of the experiment, the participants are not allowed to initiate or change their pharmacological treatment during the 3-week intervention period.
Social Skills Rating System - Parent Version (SSRS-P)	33.33 score on a scale Standard Deviation 3.56	31.93 score on a scale Standard Deviation 2.78	31.50 score on a scale Standard Deviation 4.70

SECONDARY outcome

Timeframe: 3 weeks post-intervention

Population: Data were collected from the guardians of all participants who completed the BRIEF assessments, resulting in 30 participants in each group.

To assess the executive functioning of participants using the Behavior Rating Inventory of Executive Function (BRIEF), which will be scored by the participants' guardians. The subscales of inhibition (16 items) and emotional control (10 items) will be adopted in this study. A 3-point Likert scale (1 = Never, 2 = Sometimes, 3 = Often) is used to score. The total score ranges from 26 to 78, with higher scores indicating poor executive functions.

Outcome measures

Outcome measures
Measure	Social VR Intervention n=30 Participants Social VR intervention is developed to enhance the social interaction skills of children. The participants will wear a head-mounted display for the Social VR intervention. Each session of the Social VR intervention lasts for a maximum of 20 minutes to ensure the participants focus on the intervention and prevent causing any physical effect. The duration will be adjusted depending on the emotion of the participants during the intervention. The Social VR intervention will mainly help the participant to enhance their social interaction skills and executive function. The intervention contains three real-life virtual scenarios, including (1) classroom and playground, (2) MTR station and compartment, and (3) supermarket and restaurant. One scenario will be adopted in each session. The sequences of the scenarios used in each session will be the same for all participants. Virtual reality: There are a total of 12 training sessions for 3 weeks (4 sessions per week). Each session of the Social VR intervention lasts for a maximum of 20 minutes. The intervention contains three real-life virtual scenarios, including (1) a classroom and playground, (2) an MTR station and compartment, and (3) a supermarket and restaurant.	Traditional Social Skills Training n=30 Participants An experienced SEN teacher will teach the participants social interaction skills through tradidactic instructions and role-play activities. Four modules will be covered in the 3-week training: (1) how to introduce yourself and basic social skills; (2) how to listen to others; (3) how to share with others; (4) learn to know how people feel and how to empathise. These modules have been applied in many studies (Braswell \& Bloomquist, 1991; Huang et al., 2015). The content of this training will be as similar as possible to the Social VR training. The training lasts 20 minutes which depends on the emotion of the participants. Traditional social skills training: There are a total of 12 training sessions for 3 weeks (4 sessions per week). Each session lasts for a maximum of 20 minutes. Four modules will be covered in the 3-week training: (1) how to introduce yourself and basic social skills; (2) how to listen to others; (3) how to share with others; (4) learn to know how people feel and how to empathise.	Waitlist Control Group n=30 Participants The participants in this group will receive no training and they can participate in the social VR training after the intervention period. To ensure the consistency of the experiment, the participants are not allowed to initiate or change their pharmacological treatment during the 3-week intervention period.
Behaviour Rating Inventory of Executive Function	16.83 score on a scale Standard Deviation 3.08	17.98 score on a scale Standard Deviation 2.68	19.63 score on a scale Standard Deviation 4.91

SECONDARY outcome

Timeframe: After the last session (after 3 weeks)

Population: Data were collected from 30 participants in the VR training group and 30 participants in the traditional social skills training group to assess satisfaction at the last session of the intervention.

Satisfaction with the intervention was measured using a 7-point Likert scale (1 = very dissatisfied, 7 = very satisfied) administered at the last session of the VR training group. The total score ranges from 1 to 7, with higher scores indicating greater satisfaction.

Outcome measures

Outcome measures
Measure	Social VR Intervention n=30 Participants Social VR intervention is developed to enhance the social interaction skills of children. The participants will wear a head-mounted display for the Social VR intervention. Each session of the Social VR intervention lasts for a maximum of 20 minutes to ensure the participants focus on the intervention and prevent causing any physical effect. The duration will be adjusted depending on the emotion of the participants during the intervention. The Social VR intervention will mainly help the participant to enhance their social interaction skills and executive function. The intervention contains three real-life virtual scenarios, including (1) classroom and playground, (2) MTR station and compartment, and (3) supermarket and restaurant. One scenario will be adopted in each session. The sequences of the scenarios used in each session will be the same for all participants. Virtual reality: There are a total of 12 training sessions for 3 weeks (4 sessions per week). Each session of the Social VR intervention lasts for a maximum of 20 minutes. The intervention contains three real-life virtual scenarios, including (1) a classroom and playground, (2) an MTR station and compartment, and (3) a supermarket and restaurant.	Traditional Social Skills Training n=30 Participants An experienced SEN teacher will teach the participants social interaction skills through tradidactic instructions and role-play activities. Four modules will be covered in the 3-week training: (1) how to introduce yourself and basic social skills; (2) how to listen to others; (3) how to share with others; (4) learn to know how people feel and how to empathise. These modules have been applied in many studies (Braswell \& Bloomquist, 1991; Huang et al., 2015). The content of this training will be as similar as possible to the Social VR training. The training lasts 20 minutes which depends on the emotion of the participants. Traditional social skills training: There are a total of 12 training sessions for 3 weeks (4 sessions per week). Each session lasts for a maximum of 20 minutes. Four modules will be covered in the 3-week training: (1) how to introduce yourself and basic social skills; (2) how to listen to others; (3) how to share with others; (4) learn to know how people feel and how to empathise.	Waitlist Control Group The participants in this group will receive no training and they can participate in the social VR training after the intervention period. To ensure the consistency of the experiment, the participants are not allowed to initiate or change their pharmacological treatment during the 3-week intervention period.
Satisfaction of the Intervention	6.8 Score on a scale Standard Deviation 1.6	6.7 Score on a scale Standard Deviation 1.7	—

SECONDARY outcome

Timeframe: Assessments will be conducted at the end of each session of the VR intervention group (twelve sessions in total), with the total score reflecting cumulative discomfort experienced across all sessions.

Population: Only the participants in the Social VR Intervention were assessed.

To measure the motion sickness or physical discomfort of participants in VR environment. Nine items will be measured, including discomfort, fatigue, headache, eyestrain, sweating, nausea, difficulty concentrating, blurred vision and dizziness, with yes or no questions for each item.

Outcome measures

Outcome measures
Measure	Social VR Intervention n=30 Participants Social VR intervention is developed to enhance the social interaction skills of children. The participants will wear a head-mounted display for the Social VR intervention. Each session of the Social VR intervention lasts for a maximum of 20 minutes to ensure the participants focus on the intervention and prevent causing any physical effect. The duration will be adjusted depending on the emotion of the participants during the intervention. The Social VR intervention will mainly help the participant to enhance their social interaction skills and executive function. The intervention contains three real-life virtual scenarios, including (1) classroom and playground, (2) MTR station and compartment, and (3) supermarket and restaurant. One scenario will be adopted in each session. The sequences of the scenarios used in each session will be the same for all participants. Virtual reality: There are a total of 12 training sessions for 3 weeks (4 sessions per week). Each session of the Social VR intervention lasts for a maximum of 20 minutes. The intervention contains three real-life virtual scenarios, including (1) a classroom and playground, (2) an MTR station and compartment, and (3) a supermarket and restaurant.	Traditional Social Skills Training An experienced SEN teacher will teach the participants social interaction skills through tradidactic instructions and role-play activities. Four modules will be covered in the 3-week training: (1) how to introduce yourself and basic social skills; (2) how to listen to others; (3) how to share with others; (4) learn to know how people feel and how to empathise. These modules have been applied in many studies (Braswell \& Bloomquist, 1991; Huang et al., 2015). The content of this training will be as similar as possible to the Social VR training. The training lasts 20 minutes which depends on the emotion of the participants. Traditional social skills training: There are a total of 12 training sessions for 3 weeks (4 sessions per week). Each session lasts for a maximum of 20 minutes. Four modules will be covered in the 3-week training: (1) how to introduce yourself and basic social skills; (2) how to listen to others; (3) how to share with others; (4) learn to know how people feel and how to empathise.	Waitlist Control Group The participants in this group will receive no training and they can participate in the social VR training after the intervention period. To ensure the consistency of the experiment, the participants are not allowed to initiate or change their pharmacological treatment during the 3-week intervention period.
Simulator Sickness Questionnaire	0 Participants	0 Participants	0 Participants

Adverse Events

Social VR Intervention

Serious events: 0 serious events

Other events: 0 other events

Deaths: 0 deaths

Traditional Social Skills Training

Serious events: 0 serious events

Other events: 0 other events

Deaths: 0 deaths

Waitlist Control Group

Serious events: 0 serious events

Other events: 0 other events

Deaths: 0 deaths

Serious adverse events

Adverse event data not reported

Other adverse events

Adverse event data not reported

Additional Information

Dr. Ka Po Wong

The Hong Kong Polytechnic University.

Phone: 64860214

Email: [email protected]

Results disclosure agreements

Principal investigator is a sponsor employee
Publication restrictions are in place

Measure	Social VR Intervention n=30 Participants Social VR intervention is developed to enhance the social interaction skills of children. The participants will wear a head-mounted display for the Social VR intervention. Each session of the Social VR intervention lasts for a maximum of 20 minutes to ensure the participants focus on the intervention and prevent causing any physical effect. The duration will be adjusted depending on the emotion of the participants during the intervention. The Social VR intervention will mainly help the participant to enhance their social interaction skills and executive function. The intervention contains three real-life virtual scenarios, including (1) classroom and playground, (2) MTR station and compartment, and (3) supermarket and restaurant. One scenario will be adopted in each session. The sequences of the scenarios used in each session will be the same for all participants. Virtual reality: There are a total of 12 training sessions for 3 weeks (4 sessions per week). Each session of the Social VR intervention lasts for a maximum of 20 minutes. The intervention contains three real-life virtual scenarios, including (1) a classroom and playground, (2) an MTR station and compartment, and (3) a supermarket and restaurant.	Traditional Social Skills Training n=30 Participants An experienced SEN teacher will teach the participants social interaction skills through tradidactic instructions and role-play activities. Four modules will be covered in the 3-week training: (1) how to introduce yourself and basic social skills; (2) how to listen to others; (3) how to share with others; (4) learn to know how people feel and how to empathise. These modules have been applied in many studies (Braswell \& Bloomquist, 1991; Huang et al., 2015). The content of this training will be as similar as possible to the Social VR training. The training lasts 20 minutes which depends on the emotion of the participants. Traditional social skills training: There are a total of 12 training sessions for 3 weeks (4 sessions per week). Each session lasts for a maximum of 20 minutes. Four modules will be covered in the 3-week training: (1) how to introduce yourself and basic social skills; (2) how to listen to others; (3) how to share with others; (4) learn to know how people feel and how to empathise.	Waitlist Control Group n=30 Participants The participants in this group will receive no training and they can participate in the social VR training after the intervention period. To ensure the consistency of the experiment, the participants are not allowed to initiate or change their pharmacological treatment during the 3-week intervention period.	Total n=90 Participants Total of all reporting groups
Age, Categorical <=18 years	30 Participants n=5 Participants	30 Participants n=7 Participants	30 Participants n=5 Participants	90 Participants n=4 Participants
Age, Categorical Between 18 and 65 years	0 Participants n=5 Participants	0 Participants n=7 Participants	0 Participants n=5 Participants	0 Participants n=4 Participants
Age, Categorical >=65 years	0 Participants n=5 Participants	0 Participants n=7 Participants	0 Participants n=5 Participants	0 Participants n=4 Participants
Age, Continuous	8.63 years STANDARD_DEVIATION 1.90 • n=5 Participants	8.30 years STANDARD_DEVIATION 1.70 • n=7 Participants	8.67 years STANDARD_DEVIATION 1.45 • n=5 Participants	8.53 years STANDARD_DEVIATION 1.70 • n=4 Participants
Sex: Female, Male Female	7 Participants n=5 Participants	4 Participants n=7 Participants	6 Participants n=5 Participants	17 Participants n=4 Participants
Sex: Female, Male Male	23 Participants n=5 Participants	26 Participants n=7 Participants	24 Participants n=5 Participants	73 Participants n=4 Participants
Race (NIH/OMB) American Indian or Alaska Native	0 Participants n=5 Participants	0 Participants n=7 Participants	0 Participants n=5 Participants	0 Participants n=4 Participants
Race (NIH/OMB) Asian	30 Participants n=5 Participants	30 Participants n=7 Participants	30 Participants n=5 Participants	90 Participants n=4 Participants
Race (NIH/OMB) Native Hawaiian or Other Pacific Islander	0 Participants n=5 Participants	0 Participants n=7 Participants	0 Participants n=5 Participants	0 Participants n=4 Participants
Race (NIH/OMB) Black or African American	0 Participants n=5 Participants	0 Participants n=7 Participants	0 Participants n=5 Participants	0 Participants n=4 Participants
Race (NIH/OMB) White	0 Participants n=5 Participants	0 Participants n=7 Participants	0 Participants n=5 Participants	0 Participants n=4 Participants
Race (NIH/OMB) More than one race	0 Participants n=5 Participants	0 Participants n=7 Participants	0 Participants n=5 Participants	0 Participants n=4 Participants
Race (NIH/OMB) Unknown or Not Reported	0 Participants n=5 Participants	0 Participants n=7 Participants	0 Participants n=5 Participants	0 Participants n=4 Participants
Region of Enrollment Hong Kong	30 participants n=5 Participants	30 participants n=7 Participants	30 participants n=5 Participants	90 participants n=4 Participants
Having received a diagnosis of ADHD by Child Assessment Service in Hong Kong or via private practice	30 Participants n=5 Participants	30 Participants n=7 Participants	30 Participants n=5 Participants	90 Participants n=4 Participants