subject: Effective Workplace Bullying Investigations [print this page] Other areas where credibility must be determined include investigation interview statements. Once it has been decided that a complaint warrants an investigation, it will be important to determine the credibility of statements made by the complainant, subject (the accused) and any witnesses. During investigation interviews, investigators must take note of physical and vocal indicators, as well as any relationships between employees, in order to determine if any bias exists that could be influencing their statements. We cover this topic in greater detail inour post "Investigation Interview Questions to Determine Credibility."