Scheier, M. F., Carver, C. S., & Bridges, M. W. (1994). Distinguishing optimism from neuroticism (and trait anxiety, self-mastery, and self-esteem): A re-evaluation of the Life Orientation Test. Journal of Personality and Social Psychology, 67, 1063-1078.
• 6 items
• Developed in the United States (English)
• Suggested by: Marco Perugini & Giulio Costantini, Milan, Italy