What effect does repetition have on the speech

Emphasis on words/phrases

Memory impression on audience

Explanation:

In a speech, the speaker may decide to use repetition to emphasize certain ideas, make them stand out. Because the ideas are being voiced more times, the speaker is indicating that they are more important.

Naturally, if the speaker says a word or a phrase more, the audience is more likely to remember it.

Example:

With repetition:

"They have a desire to be free - - free from war, free from starvation, and free from oppression."

Using repetition, the speaker conveys to the audience that the idea of being free is important. The audience is more likely to remember that 'they' really want to be free.

Without repetition:

"They have a desire to be free from war, starvation and oppression."

Without repetition, the idea of being free is not stressed. This sentence would seem just like all of the other sentences that the speaker says. Because this sentence does not stand out, the idea of freedom gets lost within the many many other ideas the speaker talks about. If the speaker wants to audience to remember this idea, he/she could use repetition.