Staff 1~2
✔Check target's profile and make sure that he/she is qualified for this study.
✔Hand out pre-questionnaire to target and have him/her fill out.
✔Give out "target profile sheet" that includes target's basic demographic information as well as study flow pattern (A or B) that he/she should follow. Target should carry around it all time until finishing all steps.
Staff 3~4
✔Receive "target profile sheet" from target who finished all steps and give an incentive to him/her.