The guide contains tips drawn from our survey experience and will help you design an effective survey, prepare your participant list, write convincing email invitations and make the most of the resources available to you.
Clarify your survey’s objectives
The challenge consists of avoiding long questionnaires and thus including only those questions that will help you in making decisions. The length of your questionnaire could significantly affect your response rate and the proportion of incomplete surveys. A low response rate and a high incomplete rate increase the risk of obtaining biased results. According to some researchers, the questionnaire should not take more than 10 minutes to complete (Crawford, Couper and Lamias, 2001), while others set 20 minutes as the limit (Gunn, 2002).