the respondent's answers. Audio computer-assisted self-interviewing (audio CASI): The respondent operates the computer, the computer displays the question on the screen and plays recordings of the questions to the respondents, who then enters his/her answers. Computer-assisted telephone interviewing (CATI) Interactive voice response (IVR): The computer plays recordings of the questions to respondents over the telephone, who then respond by using the keypad of the telephone or speaking their answers aloud. Web surveys: The computer administers the questions online. See also Assessment Comparison of survey software Data collection system References