People find it hard to maintain eye contact when talking, possibly because the dual task of maintaining eye contact while also racking the brain for a word is just too demanding, so the brain pushes for breaking eye contact to focus exclusively on finding a word that will fulfill the obligation.

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People find it hard to maintain eye contact when talking, possibly because the dual task of maintaining eye contact while also racking the brain for a word is just too demanding, so the brain pushes for breaking eye contact to focus exclusively on finding a word that will fulfill the obligation.