in seattle a team of researchers are investigating such conflicts at the gottman institute's love lab carrie cole helps couples to better manage their disagreements. the psychologist has helped hundreds of couples and remains convinced that love can last a lifetime. absolutely my parents were married for 58 and a half years and my father died and. he was her knight in shining armor and she was his princes that's the way it always was so i do believe in that. i do believe that it's important the way that we speak to people and treat people is very important. lori and jeff have been together for more than 20 years after that but they feel that the deep love and passion they once shared has started to fade i'd like to tell you or it did. for the next 8 hours kerry call will observe laurie and jeff's interactions. with laurie and jeff are being wired up and then they'll have a conversation about a topic that tends to result in a conflict electrodes will record how strongly they react to each other how angry they become how stressed they feel. carrie listens and observes. she'll use the da