Problems in communication with strangers occur at times because we are uncertain and anxious about the meanings of nonverbal cues.And when strangers violate our expectations of nonverbal usage we tend to behave negatively. Based on Communicate by Rudolph F.Verderber Problems in communication with strangers occur at times because we are uncertain and anxious about the meanings of nonverbal cues. And when strangers violate our expectations of nonverbal usage, we tend to behave negatively. Based on Communicate by Rudolph F. Verderber