Many years ago I worked at a marketing research company. Of cource we provided qualitative marketing research services. Every project started from understanding an audience. The next step was to find a psychologist who has an experience in the specific field. For example, we need to know how poor people responce to a quality service. So, a psychologist need to have some experience of "poor people behaviour". Then we created a questionnaire that includes many types of questions to exclude people who just clicked anything Also we hire moderators. 20 years ago only two persons in Ukraine can moderate such marketing research projects. I just want to say that psychological tests are really complex. But it is the interesting quiz that can help people to be interested in self-discovery. For marketing purposes... there is a lot of factors which influence the behaviour of buyers. Also this behaviour depends on the cultural, demographic, social factors, experience and knowledge about a product or service. For example, I know nothing about how to buy a tea. So, I will take a decision on the basis of the cultural factors (in a tea shop) or my experience (in a grocer or supermarket).
The first question has nervous spelt wrong (there is no 'i' in nervous. As each page took a good 10 seconds to load I didn't bother.