“…Contextually, many studies have assessed the validity of RR methods, showing that they can produce more reliable answers than conventional data collection methods (eg, direct questioning (DQ) in face‐to face interviews, SAQs with paper and pencil and CASIs). The RRT has been applied in surveys covering a variety of sensitive topics, as drug use, racism, abortion, sexual victimization, cheating, and so on, as indicated in the articles of Perri et al and Rueda et al We found some more recent studies related with people's sexual practice in the United States, health care study of the dependence structure, inappropriate sexual behavior among university students, contaminants in the air and water, genital cutting in Southern Ethiopia, female sex workers in Taiyuan, China,, drug use in Republic of Georgia, illegal cable TV subscribers, and the right to receive welfare …”