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"Long before neuroscience proved it, politicians knew the power of the emotional brain."

Video Review: Political Persuasion Hollywood Style

Neuroscience may have proven its power, but savvy politicians have always relied on messages meant for the emotional brain.

A great example of the long legacy of political persuasion from Hollywood’s golden age is the 1949 American film noir written, produced, and directed by Robert Rossen, All the King’s Men.

Reportedly based on the real-life political career of Huey Long, who served as the 40th Governor of Louisiana from 1928 to 1932 and as a member of the United States Senate from 1932 until his assassination in 1935, this Hollywood version depicts local boy Willie Stark as a facts-and-figures policy wonk who learns the power of emotional triggers.

Here’s a brief look at how the film depicts the persuasion education of Willie Stark.