Talk to Us

Simply fill in our enquiry form and one of our Consultants will be in touch shortly.

Find us


Call Us

+86 21 6879 4410

Connect With Us

Send us a Message

Dexion collects and uses your personal information to provide you with our products and services, to seek your feedback, for marketing activities and to keep you updated with information which may be relevant to you. View our Privacy Policy

    Limitations of Questionnaires and Web Experiments

    Web-based research and questionnaires are essential epidemiologic tools that offer vital information about public health and disease. They are a common method of collecting data that are often less expensive and time-consuming than face-toface interviews, mailed questionnaires, or automated phone menu systems. However questionnaires, surveys and Web experiments are not without limitations that must be addressed to ensure valid and reliable results.

    A questionnaire may be affected by response bias. This is the tendency of respondents to answer questions based on their opinions instead of research goals. The layout of a survey can influence responses in many ways. For instance, the wording of the question could influence how respondents respond to the question and interpret it in the same way (reliable), whether the question measures the subject you are interested in (valid), and whether they are able to accurately answer (credible).

    A lack of involvement with the questions may make respondents less likely to give honest answers. In addition, a lack of incentives or monetary compensation could make it difficult for respondents to take the time to complete survey forms.

    Online questionnaires also pose challenges for certain experimental designs, like reaction-time or positioning studies. It is challenging to measure and control variables across participants because of the differences in settings for browsers operating systems, browser settings, and screen sizes.

    In addition, Web-based surveys are only accessible to people who have keyboards and are Internet literate, which currently excludes a significant proportion of the population. It’s also difficult to Web researchers to provide participants with a report after the window for their experiment has closed.