The debate between Donald Trump and Kamala Harris revealed more about each person in what they said and how they said it.AP Photo/Alex BrandonPatricia Friedrich, Arizona State University In their campaigns, former President Donald Trump and Vice President Kamala Harris project different emotions and moods. The contrast between them was particularly sharp during their debate on Sept. 10, 2024. One candidate made appeals to the past, used more negative words and invoked fear. The other spoke more of the future, used more positive words and appealed to voters’ sense of hope. As a linguist, writer…