During the Japanese occupation , mixed - race Japanese were taught in the Japanese language as well as its cultural customs .
Most mixed - race children were taught to speak Papuan languages and English from infancy , and had little knowledge of the Japanese language and customs .
During the Japanese occupation , mixed - race Japanese were taught in the Japanese language as well as Japanese 's cultural customs .
Most mixed - race children were taught to speak Papuan languages and English from infancy , and had little knowledge of the Japanese language and customs .