Questionnaires and web trials allow doctors to reach a much wider readership than classic paper questionnaires, cellular phone or face-to-face interviews and is conducted at a cheaper cost. This will make them a favorite tool for market research and customer studies as well as unconscious research. However , irrespective of their many advantages offered with some negatives which can challenge the quality of the results.
One major issue is that there is less control over data capture than with a paper set of questions. With a Internet experiment the participant can view stimuli on their own personal device and may also modify settings including screen size, web browser, internet connection and in many cases the default font. What this means is that each respondent experiences a discreetly different customer survey and this can affect how they get suggestions.
Another problem is questionnaire taking tiredness which can lead to respondents abandoning the study. The way to avoid this is to make the questionnaire when short as possible and only inquire abuout that are relevant to your research. Also you can try to randomize the purchase of the questions and pretest the questionnaire prior to performing that to ensure that all the questions are distinct and understandable.
Finally, you will need to keep in mind that Net experiments depend on voluntary involvement so they can be susceptible to motivational confounding than laboratory tests. To counter this kind of, you can use an online marketplace including SONA devices (often employed for undergraduate diagnostic tests at universities), internet-based.org/advantages-and-disadvantages-of-questionnaires MTurk or Productive to get participants.