<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">William H. Calvin</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Did throwing stones shape hominid brain evolution?</style></title><secondary-title><style face="normal" font="default" size="100%">Ethology and Sociobiology</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Tool</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">1982</style></year></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://www.sciencedirect.com/science/article/pii/0162309582900103</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">3</style></volume><pages><style face="normal" font="default" size="100%">115 - 124</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;Early hominid evolution may have involved an interaction between lateralization to left brain of rapid motor sequencing (e.g., right handedness) and its selection via one-handed throwing of stones at small prey. Since a more redundant sequencer should permit faster orchestration of muscles, faster (and hence longer range) throws could have selected for encephalization. Secondary uses of the enlarged sequencer may have included tool-sharpening and manual gestures. Because an oral-facial sequencing area just below motor strip forms the core of modern language cortex, there may have been a common origin of handedness and language in redundant sequencing circuits selected by throwing success.&lt;/p&gt;
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