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Kellogg, W.A. and Kellogg, L.A. (1933) The Ape and the Child. New York: McGraw-Hill [Senate House Library PSYCHOLOGY 6th Floor (67) IAV Kel]

On June 26, 1931 Gua was separated from her mother (had been born in Cuba on Nov 15 1930)

she was then 7.5 months old, 2.5 months younger than Donald

The two lived together as companions until March 28, 1932;

i.e. for nine months, from 7.5 months to 1yr 4.5 months for Gua, and 10 months to1yr 7 months for Donald

Donald had the words “Gua”, “din-din” and “Daddy” at 11.5 months

Gua did not learn any new sounds at all during the nine months, but used several to start with,

1. The bark, 2. the food-bark. 3. the screech or scream 4. the “Oo-oo” cry - whimpering, pleading or imploring character (pp. 282- 3)

p.282 the child was very. superior in vocal imitation and copied the noises made by the chimpanzee.

p. 138 imitation was much less marked in Gua than in Donald, previous to this, Donald's attention to novel objects etc was much more prolonged.

Donald imitated the chimpanzee in a sort of wrestling, which he seemed to be better at. (139)

Gua imitated the use of a hairbrush during the later months.

p.141 Gua was almost always the leader in finding new toys to play with and new methods of play, with Donald taking the role of imitator or follower (although both imitated on the typewriter at the same time).

Donald did not crawl much early on, but he copied Gua doing it after he had learned to walk, and in some cases, when Gua dropped to all fours he would get on his hands and knees.

At 14 months he copied her food bark or grunt and at 14 months he was occasionally caught attempting to bite or scrape the wall with his teeth, one of the ape's most objectionable habits.

p. 229 the ape learns many tasks in fewer trials than the child but does relatively little imitating.

p. 230 the child is a more versatile and continuous imitator than the animal