“…This approach has been argued to improve response rates among organizational respondents compared to mail questionnaires and other impersonal delivery systems (Ibeh, Brock, & Zhou, 2004;Lovelock, Stiff, Cullwick, & Kaufman, 1976). In particular, a response rate of 40 to 90% is often considered satisfactory for drop-and-collect surveys (Balabanis & Diamantopoulos, 2004;Brown, 1987;O'Cass & Pecotich, 2005). Moreover, using dropand-collect technique is encouraged in developing countries such as Vietnam where interpersonal interactions are preferred as modes of information exchange (Hofstede, 1980).…”