The document discusses different types of interview methods used in psychology: structured interviews, semi-structured interviews, and unstructured interviews. Structured interviews involve asking all candidates the same predetermined questions. Semi-structured interviews involve asking some predetermined questions but also allowing new questions to arise spontaneously. Unstructured interviews have no predetermined questions and arise organically from a free-flowing conversation. Each method has advantages like objectivity or flexibility and disadvantages like lack of structure or difficulty in analysis.