
Semi-structured interviews are a blend of structured and unstructured interviews. The participants can express themselves more freely and elaborate on their answers. Questions are mostly open-ended and are not arranged in order. Unstructured interviews are the opposite of structured interviews. Structured interviews are easy to execute but leave little room for spontaneity. These questions are often closed-ended and draw a yes, no or a short answer from the respondents. Structured interviews include an ordered list of questions. It includes three main types: structured, unstructured, and semi-structured interviews. The interview is a qualitative research method that collects data by asking questions. Interview as a research instrument, Unsplash

The most common ones are interviews, surveys, observations, and focus groups. There are many examples of research instruments.

In research, marketers often collect data from various sources to produce and validate research results.
