I often get asked how people can improve their nonverbal communication skills. Or what nonverbal behaviors show a person is definitely interested in a conversation. Or how you can tell if an interviewer likes your answers.
My answer is almost always that it depends. It depends on a person's specific goals. It depends on the industry in which they work. It depends on what their unique communication challenges are.
Because nonverbal behaviors and what they mean depend on their context.
For example, someone giving a presentation might blink a lot because they are nervous. They might also blink a lot because they are struggling with their contacts. It's important to remember, we only see the behavior, not the motivation behind it.
Having said that, there are a few nonverbal skills that are regarded as almost universally positive. I explore three of these skills in the video below.