NASM Group Personal Training Specialist (GPTS) Practice Exam

Trust in testimonials from strangers is a powerful form of social proof that can drive decisions beyond what traditional ads do. The Nielsen study from 2011 found that about seventy percent of consumers indicated they trusted online opinions from strangers about products. This shows how influential third-party endorsements can be, even when the source isn’t personally known, because they’re perceived as more independent and honest. The high level of trust reflected by this figure explains why user reviews and testimonials play such a critical role in shaping perceptions and purchases. In practical terms, it highlights why organizations focus on gathering authentic reviews and why negative feedback, when credible, can also significantly affect trust.