Quoting mloker:" Hello. I am a graduate student taking a language acquisition class, and I'm writing a mini-research paper ... [snip!] ... a pillow at. Please tell me the age of the child when they invented the word(s), their gender, and the word(s). Thank you."
I can tell you theories of how children acquire words. I don't see how gender has anything to do with it, age has a huge impact on the stages of language acquisition. Gender doesn't have too big of an influence, honestly.
But if you don't know the theories of language acquisition I can give you sites... things like "goed" instead of "went" because of "over generalization." If anything, look up Noam Chomsky's theories of language development. He is absolutely the man to study.
I have learned about linguistics for a few years (its my minor) and English is my major, my second minor is Secondary Education. Language acquisition fascinates me.