into personal information (such as annual income), or there are too many questions in the survey as a whole.Harder to get details or explanations. Most respondents are less willing to type detailed, explanatory answers. For this reason, these so-called open-ended questions often need to become closed-ended “choose all that apply” questions with predefined categorical answers (see example below). While these question types help avoid a high dropout rate, they do not allow the question.Which method employee email list should you use?Below are some examples of where it would be appropriate to use an IDI or an online survey.In-depth interviewConsider this; you have noticed an increase in demand for a service provided by your company. You want to grow this branch of the business and reinforce your brand message to this target audience. First, you need to use research to establish a baseline understanding of how your customers perceive your brand.Audience Persona: Past clients who have hired my company to address a growing industry challenge.