Each respondent s time should be respected.
Lengthy interviews are a burden to the respondent.
Research organizations are responsible for weighing the need for information against the length of the interview. In-person and telephone interviewing should be conducted between the hours of 9 a.m. and 9 p.m., except by appointment. Respondents should not be misled regarding length of interview. Interviewers should have an efficient and professional style. All reasonable precautions shall be taken to ensure that the respondent and others closely associated with the respondent are in no way adversely affected or embarrassed as a direct result of any interview, including subject matter, technique or communication concerning the research project.