Two experiments examine the effects of tailored testimonials on people's knowledge, satisfaction, interest in shared decision-making, and behavioral intentions after reading a colorectal cancer screening decision aid.
Aim 1. Examine whether tailored testimonials can improve decision aid outcomes such as knowledge, satisfaction, interest in shared decision-making, and behavioral intentions.
Aim 2. Test mediators through which tailored testimonials have effects.
Study 1 includes 1600 participants (2x2 design, 400 per cell) between ages 49-55, have never been screened for colorectal cancer (CRC).
Study 2 recruits the same participant total with the same characteristics as Study 1, but does not recruit any individual who participated in Study 1.
Participants for both studies are recruited from an online panel of people who agree to participate in online surveys (e.g., Survey Sampling, Inc. or SSI).