Quota requirement are not revealed to the recruiters
Supervisors check completed screening questionnaire sent from recruiters via in-house Excel database
Completed screening questionnaires sent to QC unit to check validity of other information
One participant from one recruiter is allowed in each group
Recruiters are not allowed to work for other agencies
Respondents are checked by supervisors once they arrive at the group session
Screening questionnaire
Check ID card
Intimate conversation
Photograph of all group members is taken after the group session to keep record to prevent false and recycling respondents