Mepụta ụdị nke ahịrịokwu a dị mgbagwoju anya Nsogbu nke Ụmụaka Nwere Nkwarụ'bụ akwụkwọ e bipụtara n'afọ 1985 nke Peter Singer na Helga Kuhse dere.
N'ezie, ụdị nkebi ahịrịokwu ahụ dị mgbagwoju anya bụ "The Problem of Handicapped Infants' bụ akwụkwọ nke Peter Singer na Helga Kuhse dere n'afọ 1985, nke ndị dere ya na-enyocha ihe ndị metụtara omume metụtara ụmụ ọhụrụ a mụrụ nwere nkwarụ siri ike, ma na-arụ ụka maka igbu ụmụaka n'ọnọdụ ụfọdụ. "