Surveys that rely on respondents to provide information on sensitive, stigm
atized, or illicit behaviors may be subject to reporting bias. Audio comput
er-assisted self-interview (audio-CASI), technology has been developed by r
esearchers at the Research Triangle Institute. USA to overcome the limitati
ons of traditional paper and pencil self-administered questionnaires (SAQs)
and in-person interviewer-administered questionnaires (IAQs). The developm
ent of audio-CASI technology has fundamentally altered the interview contex
t for measuring sexual and other sensitive behaviors by providing privacy w
ithout requiring literacy. This paper reviews the scientific development of
audio-CASI and describes the results of methodological experiments compari
ng audio-CASI with other survey interview modes. in 1995. RTI's audio-CASI
technology was field tested in two major U.S, national surveys: The Nationa
l Survey of Adolescent Males (NSAM) and the National Survey of Family Growt
h (NSFG). These surveys found substantially higher levels of reporting of d
rug use, same gender sexual contact and induced abortion with audio-CASI th
an IAQs or SAQs.