3. Research Purpose and Methodology • Purpose: To understand Vietnamese internet users online buying and selling behaviour • Roles in the Joint Study: – Acorn – study & questionnaire design, charting, analysis and reporting – Epinion- programming, selection of respondents & online administration • Respondent selection criteria: – Existing members of Epinion’s online panel – Aged 18 to 54 – Quotas placed on age to be representative of Vietnam’s internet using population – Nationwide coverage • Methodology: Online survey via emailed invitation -July/Aug ‘12 • Length of interview: maximum 20 minutes • Sample size: n=2,495 • Data Analysis: Data post-weighted.
