Answered By: Patricia Sutherland
Last Updated: Jul 18, 2017     Views: 15

 

This is a very difficult question for researchers to answer. Please read the attached articles to find out about yawning. I located them in the VLC on the Home page by clicking on the "Games & Databases" tab and looking up yawning on the InfoTrac site.

 

http://infotrac.galegroup.com/k12/infomark/459/474/188860106w16/purl=rc1_K12J_0_A62346431&dyn=11!xrn_2_0_A62346431?sw_aep=ko_pl_portal

 

http://infotrac.galegroup.com/k12/infomark/459/474/188860106w16/purl=rc1_K12J_0_A256365270&dyn=18!xrn_3_0_A256365270?sw_aep=ko_pl_portal

 

 

Thanks for your question!

 

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