What type of interview provides the least guidance to the candidate?

The unstructured interview provides the least guidance to the candidate because it allows for a free-form dialogue where the interviewer can ask open-ended questions that lead to a wide range of responses. This informal approach encourages candidates to express themselves freely, without the constraint of pre-determined questions or a strict format. As a result, the interviewer can explore topics more deeply based on the candidate's responses, but this also means that the candidate may feel less directed in terms of the information they should provide.

In contrast, structured interviews follow a fixed set of questions, which ensures consistency and allows the interviewer to compare candidates more easily. Semi-structured interviews blend the two approaches, allowing for some prepared questions while also giving space for follow-up inquiries based on responses. Panel interviews involve multiple interviewers who may ask more directed questions but still provide a formal structure. The unstructured format, therefore, stands out for its flexibility and minimal guidance, shaping a very different experience for the candidate.