unstructured interviews

Question 1

What are the practical advantages of this method?

Answer 1

• the informality of this method allows the
  interviewer to build a rapport (relationship
  based on trust) which in turn, improves
  validity of participant responses

Question 1

What are the practical disadvantages of this method?

Answer 1

• time consuming; interviews are in depth
  which also affects sample size (small
  sample; reduces validity)
• training needs to be thorough which can
  be more costly and time consuming