Being vocally expressive, moving around rather than staying behind a barrier such as a desk, and making eye contact are all examples of

Being vocally expressive, moving around rather than staying behind a barrier such as a desk, and making eye contact are all examples of immediacy behaviors. 

Immediacy behaviors are verbal and nonverbal behaviors that help communicate your feelings. Sine they are verbal and nonverbal they can range from telling someone how you feel or just giving them body language that often lets them read and understand how you feel about something.