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The value function that passes through the reference point is s-shaped and asymmetrical. The value function is steeper for losses than gains indicating that losses outweigh gains. Prospect theory stems from loss aversion, where the observation is that agents asymmetrically feel losses greater than that of an equivalent gain. It centralises ...
Prospect theory and loss aversion suggests that most people would choose option B as they prefer the guaranteed $920 since there is a probability of winning $0, even though it is only 1%. This demonstrates that people think in terms of expected utility relative to a reference point (i.e. current wealth) as opposed to absolute payoffs.
A typical value function in Prospect Theory and Cumulative Prospect Theory. It assigns values to possible outcomes of a lottery. The value function is asymmetric and steeper for losses than gains indicating that losses outweigh gains. A typical weighting function in Cumulative Prospect Theory.
The concept of framing is adopted in prospect theory, which is commonly used by mental accounting theorists as the value function in their analysis (Richard Thaler Included [12]). In Prospect Theory, the value function is concave for gains (implying an aversion to risk ), indicating decreasing marginal utility with accumulation of gain.
Gain and loss are defined in the scenario as descriptions of outcomes, for example, lives lost or saved, patients treated or not treated, monetary gains or losses. [ 2 ] Prospect theory posits that a loss is more significant than the equivalent gain, [ 2 ] that a sure gain ( certainty effect and pseudocertainty effect ) is favored over a ...
For example, often individuals refuse the sale of their house or upscale their expected value simply due to their emotional attachment and effort poured into it. This means they might either stick with a property which causes greater inconvenience to alternatives or have an increased level of difficulties associated with its sale. [ 32 ]
Reference dependence is a central principle in prospect theory and behavioral economics generally. It holds that people evaluate outcomes and express preferences relative to an existing reference point, or status quo. It is related to loss aversion and the endowment effect. [1] [2]
It is an idea introduced in prospect theory. Normally a reduction in the probability of winning a reward (e.g., a reduction from 80% to 20% in the chance of winning a reward) creates a psychological effect such as displeasure to individuals, which leads to the perception of loss from the original probability thus favoring a risk-averse decision.