Computer-Mediated Versus Face-to-Face Motivational-Type Interviews

This study investigated if face-to-face motivational-type interviews (FTF-MTIs) and computer-mediated MTIs elicit the same amount of "change talk" and behavior change when young adults discuss their ambivalence about using marijuana. 150 young adults participated in the study: 50 frequent marijuana users, 50 occasional marijuana users, and 50 non-marijuana users. All participants reported being at least moderately ambivalent about their current level of marijuana use. Participants were randomly assigned to complete a brief MTI using either the standard face-to-face format or a computer-mediated format. Amrhein's manual for assessing the presence of "change talk" and "sustain talk" was used to code the language produced by respondents in each interview format. Participants' level of marijuana use was assessed at a 2-month follow-up. We hypothesized the following: * FTF MTIs would elicit more words than computer-mediated MTIs * FTF MTIs would take less time to complete than compute-mediated MTIs. * Participants who used language denoting a strong commitment to reduce their marijuana use would report significantly less marijuana use at the 2-month follow-up compared with participants whose MI-type interviews contained weaker commitment language, regardless of interview format (FTF or computer-mediated). * FTF MTIs and computer-mediated MTIs would elicit the same amount of sustain talk and change talk (e.g., desire, ability, reasons, need, commitment, and readiness statements). The latter hypothesis was exploratory because no previous research has compared these two formats for conducting MTIs.