This article examines the effects of personality traits on attitudes toward foreign policy issues among the German public. Building on previous research, it argues that personality characteristics shape an individual's motivation, goals, and values, thereby providing criteria to evaluate external stimuli and affecting foreign policy opinions. An analysis of survey data from a random sample of Germans eligible to vote confirms that the personality traits play a role in attitudes toward foreign policy issues. By and large, personality affects foreign policy opinions roughly as strongly as traditional factors such as partisanship, ideology, and social background. Among the traits studied, agreeableness and openness render persons more supportive of international cooperation and more skeptical of the use of military force, whereas conscientiousness exhibits reverse effects. Thus, personality traits merit serious attention in analyses of public opinion on foreign policy.
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