声の高低が政党党首の印象形成に与える影響

―党首討論会の音声を用いた実験研究―

抄録

This study sheds light on the effect of non-verbal information on impression for politician, and tested whether voice pitch influenced perceptions of politicians. In the experiment, we manipulated voice pitch of recordings of the debate by nine political party leaders and asked participants their impressions (favorableness and trustworthiness). We found that while lower-pitched voices increase favorableness and trustworthiness in politicians' image, higher-pitched voices negatively effect on these images, particularly on trustworthiness.