111 n ic*ithiri-siibjects design t h t w r i e d idietlier speakers ic-ere n l l o w d to gestirre arid the difficiilty of lexicol nccess, spenkers were i*icleotoped ns they described otiitiintetl nctiori cortooris to n listcrier. IVIieri speakers were perttiitred to gestirre, they gestiirrd riiore oJeti diiritig pliroses with spatial coriteiit thari cliiririg phrcises witli other coritetit. Speech with spatiol coriterit itws less Jiierit itheti speakers coriid iiot gestirre tlinri u-lieii they coirld gesture; speech with riotispotid cotiterit WIS 1101 affected by gestiire condition. l'rei*eritirig gestirririg iricreciseci the relotiiv freqiiericy of rior~iirictiire fillecl pciiises iri speech icitli spntial c o~i~c t i t , hiit riot iri speech with other toritent. OrernII, the cffccts of pre\witirig spenkers frotri gestiiririg reseriiblcd those of iricrcosirig tlie difficirlty of 1e.ricril occess by other Iiiemis, except h i t the effects of gestiire restrictioti iewc specific to speech with spntinl coritetit. Tliejitiditigs siipport the hypothesis thnt gestiirnl acconipnriiriierits to sporitorieoiis speech coti fncilitnte nccess to the nieritnl lexicon.
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