In the 1930s,John Caples published Tested Advertising Methods,which discussed his theories about the pulling power of headlines.How did Caples' work change the style of advertising writing?

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The Answer of In the 1930s,John Caples published Tested Advertising Methods,which discussed his theories about the pulling power of headlines.How did Caples' work change the style of advertising writing?

In the 1930s,John Caples Published Tested Advertising Methods,which Discussed His