Without college training directing her research, Goodall observed things that strict scientific doctrines may have overlooked. Instead of numbering the chimpanzees she observed, she gave them names such as Fifi and David Greybeard, and observed them to have unique and individual personalities, an unconventional idea at the time. She found that "it isn’t only human beings who have personality, who are capable of rational thought emotions like joy and sorrow". She also observed behaviors such as hugs, kisses, pats on the back, and even tickling, what people consider identifiable human actions. Goodall insists that these gestures are evidence of “the close, supportive, affectionate bonds that develop between family members and other individuals within a community, which can persist throughout a life span of more than 50 years.” These findings suggest similarities between humans and chimpanzees exist in more than genes alone but can be seen in emotion, intelligence, and family and social relationships.