The decision-making biases identified by behavioralists include the availability bias, relativity bias, diagnosis bias, anchoring bias, herding bias, arousal bias, endowment bias, optimism bias, status quo bias or inertia bias, representativeness bias, relativity bias, loss-aversion bias, anchoring bias, and planning bias. Many of these decision-making biases are covered in the work of Dan Ariely (2008. Predictably Irrational: The Hidden Forces that Shape Our Decisions. New York: HarperCollins Publishers) and Richard Thaler and Cass Sunstein (2008. Nudge: Improving Decisions About Health, Wealth, and Happiness. New Haven, Conn.: Yale University Press).