What causes someone to become a serial murderer? Some speculate it depends on a person's upbringing and environment. Dr. Katherine Ramsland says it's not just about parenting, but also the perception of the child and the decisions they make. She joins "Banfield" to weigh in on the influence parents had on some well-known serial killers, including Ted Bundy. Watch #Banfield: newsnationnow.com/joinus #SerialKiller #TedBundy #KatherineRamsland On "Banfield," big-name celebrities, newsmakers and public figures join Ashleigh for a unique opportunity to sit down and talk. No debates. No shouting over each other. A conversation. Weeknights at 10pm/9C. #Banfield NewsNation is your source for fact-based, unbiased news for all America. More from NewsNation: newsnationnow.com Get our app: trib.al/TBXgYpp Find us on cable: trib.al/YDOpGyG How to watch on TV or streaming: trib.al/Vu0Ikij