Your introduction should explain who you are, and what your credentials are. You should clarify if you are working alone or as a part of a team. Include the name of the academic institution or company for whom you are collecting data.  Here are some examples:  My name is Jack Smith and I am one of the creators of this questionnaire. I am part of the Department of Psychology at the University of Michigan, where I am focusing in developing cognition in infants. I’m Kelly Smith, a 3rd year undergraduate student at the University of New Mexico. This questionnaire is part of my final exam in statistics. My name is Steve Johnson, and I’m a marketing analyst for The Best Company. I’ve been working on questionnaire development to determine attitudes surrounding drug use in Canada for several years. Many people will not answer a questionnaire without understanding what the goal of the questionnaire is. No long explanation is needed; instead, a few concise sentences will do the trick. Here are some examples:  I am collecting data regarding the attitudes surrounding gun control. This information is being collected for my Anthropology 101 class at the University of Maryland. This questionnaire will ask you 15 questions about your eating and exercise habits. We are attempting to make a correlation between healthy eating, frequency of exercise, and incidence of cancer in mature adults. This questionnaire will ask you about your recent experiences with international air travel. There will be three sections of questions that will ask you to recount your recent trips and your feelings surrounding these trips, as well as your travel plans for the future. We are looking to understand how a person’s feelings surrounding air travel impact their future plans. Are you collecting these data for a class project, or for a publication? Are these data to be used for market research? Depending on what you intend to do with the data you collect from your questionnaire, there may be different requirements that you need to pay attention to...

How would you rephrase that briefly using Vietnamese?
Giới thiệu bản thân. Diễn giải mục đích của bảng khảo sát. Diễn giải về việc bạn sẽ làm với dữ liệu thu thập được. Ước tính độ dài của bảng khảo sát. Đề cập đến quà tặng. Đảm bảo bảng khảo sát phải có tính chuyên nghiệp.