Winthrop Kellogg

• Who was Gua?

  A chimpanzee raised alongside a human infant, Donald, in a 1930s nature-versus-nurture experiment
• Who conducted the Gua experiment and what was its purpos

  Comparative psychologists Winthrop and Luella Kellogg. They wanted to see if raising a chimp in a human environment would cause it to adopt human behaviors.
• How did Gua compare to the human infant, Donald, early in the experiment?

  Donald began imitating Gua's chimp-like vocalizations, which worried the Kelloggs. Gua also eventually hit a developmental plateau, particularly regarding language
• What caused the Kelloggs to end the Gua experiment after only nine months?

  Donald began imitating Gua's chimp-like vocalizations, which worried the Kelloggs. Gua also eventually hit a developmental plateau, particularly regarding language.
• What were some of Gua's key accomplishments during the experiment?

  She learned to respond to about 95 verbal commands and showed human-like behaviors such as hugging and kissing.
• What happened to Gua after the experiment ended?

  She was returned to a primate center and died of pneumonia less than a year later, shortly after her third birthday
• How is the Gua experiment viewed today?

  While historically significant, it is now considered ethically controversial due to the trauma inflicted on Gua. It served as a landmark case study in the limitations of the environment over genetics in shaping development.