To the untrained eye this might look like a bog-standard party pose between A-list mates, but to a body linguist these nonverbal signals create perilously high levels of cognitive dissonance that ...

MELISSA SUFFIELD:And it's called Body Talk. MELISSA SUFFIELD:Hi guys. RADZI CHINYANGANYA:Hey. MELISSA SUFFIELD:Hi. I'm Melissa. RADZI CHINYANGANYA:And I'm Radzi. MELISSA SUFFIELD:We're here today ...