Design and Overview
The experiment had a 2 × 2 sequenced factorial design (self-affirmation vs. no self-affirmation) × (self-efficacy information vs. no information). In overview, we administered the self-affirmation manipulation, asked the participants to respond to dependent measures assessing risk perceptions and condom use, administered the self-efficacy information, and then assessed our final dependent measures: whether participants signed up for and showed up to take an HIV test. Note that because the self-efficacy manipulation was specifically designed to motivate HIV testing (i.e., it provided information about the benefits of such tests), we placed this manipulation just before the measures of HIV testing but after the other dependent variables. As a result, we can only test the effect of the self-efficacy manipulation on the uptake of HIV testing.