Perhaps the most pervasive yet overlooked media effect is:

The _________ theory suggests that media do not have powerful immediate effects, but rather produce profound effects over time

Fill in the blank with correct word

Which of the following is true of audience attitude toward a topic?

A) ?It confers credibility to the speaker. B) ?It can be determined by conducting a demographic survey. C) ?It can be determined by seeing published opinion polls. D) ?It does not influence speech effectiveness.