What information should be collected, from whom and why?

Depending on the objective and experience of the interviewer

e.g. introductory questions, main questions, in-depth questions, follow-up questions

e.g. context of use, tasks, problems, wishes, attitudes

e.g. on the basis of mental models or known UX problems

Avoidance of suggestion, evaluation or closed answer options

Warm-up → Main topics → Conclusion

Increase comprehensibility and connectivity

e.g. with blanks or transitions

Purpose, data protection, voluntary participation, recording

documented in writing or orally, if applicable

Test run with colleague or test person for optimization

e.g. active listening, dealing with pauses, maintaining neutrality