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This article discusses how both verbal and body language can indicate deceit in conversation. Although there is no established method of lie detection, many psychologists are working towards creating a more accurate system to do so using a combination of technology that analyzes facial expression, speech patterns, and more.

Hawaii Sign Language (HSL) was once believed to be similar to American Sign Language (ASL), used in the majority of deaf communities in the U.S. However, the work of Woodward and his team revealed they're not similar at all. In 2013, the language was recognized as its own distinct language. "Everything is different," Woodward says. "The vocabulary has less than 10% correlation to ASL, which is typical of languages that don't have a relationship to each other and were developed independently." HSL also uses much more body movement and facial expression than ASL.