Communication cannot be monitored through eye contact

Which of the following is true of computer-mediated communication?

A. Instant messaging is used more often in the business world than it is used by students. B. E-mail messages are the most prone to conflict. C. E-mail messages are the least prone to conflict. D. The fewer codes conveyed by a channel, the greater the chance for the message's success.

When relationships among variables are invariant (always the same) under given conditions, researchers may formulate a:

a) Theory b) Proposition c) Law d) Constitutive definition