A researcher wants to invite therapists to participate in small focus groups to discuss their perceptions regarding "troubled" adolescent girls and the relation

In that situation, the most important issue for the researcher to consider when planning the research Breach of confidentiality from the focus group partcipants.

The 'troubles; that the adolescent girls experienced would most likely caused by the relationship that they have with their parents or other people that they cared above. Regardless of the reason, this information is really private and should be kept a secret by the researchers.