We all know that the resume is written to market a job candidate's capabilities – it's a self-promotional piece. So how much credibility does the document actually lend? Who's to say what's factual and what's hype? Related: 5 Tips For Formatting Your Resume For Easy Reading At the initial stages of resume review, employers simply have to take the job candidate's word for it. They may base it on the candidate's ability to demonstrate accomplishments and successes on the job as well as the inclusion of quantifiable and qualified results. But for resumes that are really looking to have impact and win employers over for a phone call back, they will also include testimonials. By adding testimonials, a candidate has third party support backing up the information on the resume. It's similar to the process employers will take later in the interview process to speak with referrals to confirm a candidate's experiences and capabilities are what they say they are.