When using a single-message experimental design it is difficult to prove causation because:

a. there is unambiguous causal attribution
b. it is impossible to change just one variable
c. only one message is being tested
d. there are too many confounding variables


b. it is impossible to change just one variable

Communication & Mass Media

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In a speech advocating the cultivation of hemp to lessen the need for timber, Matt

wore a shirt made from hemp, to help set the mood. Matt's shirt constitutes a _____. A) visual aid B) prop C) model D) depiction

Communication & Mass Media

This was one of the pioneers of writing for the ear:

A. Edwin Armstrong B. Edward R. Murrow C. Walter Cronkite D. Chet Huntley E. David Brinkley F. none of these

Communication & Mass Media

One aspect of the ________ stage of effective listening is separating a speaker's opinions from statements of fact.

A. responding B. understanding C. evaluating D. hearing

Communication & Mass Media

In using examples, illustrations, and narratives, it is important to

A) stress the relevancy of the material to your audience. B) present real and hypothetical examples in the same way. C) always create extended examples to add the most clarity. D) avoid the use of hypothetical examples.

Communication & Mass Media