What type of marketing research method is MOST LIKELY represented by observers behind a one-way…

➤ Why do researchers use a one-way mirror during focus groups?
Observers use a one-way mirror to remain unseen so participants act more naturally. This setup lets researchers monitor body language, spontaneous exchanges, and subtle reactions without interfering. It also allows note-taking and live feedback. Always obtain informed consent and explain observation methods to participants to meet ethical standards.