 When fellow FBI agent Dr. Lance Sweets first joined the team, Booth treated him in a condescending manner, due to his youth and boyish looks.Booth was one of the few who acknowledged the importance of psychological insight into an investigation and would bring Sweets along to investigations, albeit grudgingly — he disliked Sweets' habit of repeatedly questioning him when he was in a bad mood or confronting him with details of his private life when in the car en route to the crime scene despite Sweets' good intentions.Whenever Sweets made him feel uncomfortable in that manner, he would interrupt and cut him off with a sarcastic comment or directly tell him to be quiet.