reduplication child language acquisition foreigner talk etc conducting study derivational morphology creole languages investigating origins reduplication specifically trying determine whether best explain form meaning reduplicated structures creoles terms influence substrate languages terms effect language universals suggested data child language acquisition studies may shed light question also data regarding baby talk foreigner talk e talk adults children nonnative speakers respectively may help determining extent reduplication creoles explained terms language universals additionally patterns use reduplication adult second language learners theirnonnative language may also prove useful thus would greatly appreciate information give way data descriptions references etc regarding following questions 1 reduplication universal feature children speech baby talk foreigner talk crosslinguistically examples 2 reduplication indeed feature abovementioned speech varieties semantics associated reduplicated forms specifically reduplication used categorychanging operation used modificatory way e g diminutivization augmentation etc category change effected words applies 3 reduplication feature abovementioned speech varieties phonological form take e total reduplication rule e g tiny tiny mouse total reduplication modification e g teenyweeny find find partial reduplication one kind another syllables parts syllables reduplicated andy saperstein adsap ling ohiostate edu ohio state university