Athletes the world over practice positive imagery to become better

Which of the following is NOT true of nonverbal communication?

A. It uses a single channel. B. It is continuous. C. It usually can be controlled. D. It is unstructured and follows few rules.

Trevor is unable to engage in nonverbal communication behaviors, and his language tends to be imitative. He pays little attention to the people around him, preferring to sit and play intensely at activities requiring repetitive motions. Trevor is displaying qualities that are characteristic of

A. bipolar disorder. C. mental retardation. B. a learning disability. D. autism.