How much effort did a task actually take? Three items measure perceived difficulty and exertion.
7-point Likert (1=strongly disagree, 7=strongly agree)
Jin, H.S., Jin, P.C., Seung, H., Kim, H.J., Suh, J., Sheehan, B., & Meeds, R. (2021). Ego Depletion and Charitable Support: The Moderating Role of Self-Benefit and Other-Benefit Charitable Appeals. Journal of Advertising, 50(4), 479-493.
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