Prospect Theory suggests that...[Fill in the blank]

Question

BlackTom AI · Accepted Answer

Prospect Theory defines value relative to a reference point: people evaluate outcomes as gains or losses from that reference, not by final wealth levels. The central knowledge points are (1) reference dependence — utility (or “value”) is measured as change from a reference point, (2) the S-shaped value function — concave for gains and convex for losses, and (3) loss aversion — losses are weighted more heavily than equivalent gains. Together these imply choices and perceived profitability are driven by perceived gains and losses around the reference point rather than absolute wealth.

Step-by-step reasoning:
1. Prospect Theory models a value function v(ΔW) where ΔW = wealth − reference point. This contrasts with expected-utility theory, which uses utility(u(W)) defined on final wealth W.
2. Because v is defined on gains/losses (ΔW), decisions and measured profitability reflect how outcomes compare to the reference, not the absolute wealth level. Thus investors’ behavior and perceived gains/losses — and hence realized profitability patterns — are functions of gains and losses.
3. The S-shape explains observed risk behavior: concave in the domain of gains (risk-averse for gains) and convex in the domain of losses (risk-seeking for losses), and loss aversion explains stronger reactions to losses.
4. These features generate empirical patterns (for example the disposition effect), but the core theoretical claim is reference-dependent valuation.

Why the correct choice is c:
- Option c precisely states that profitability is a function of gains and losses rather than wealth, matching the reference-dependence core of Prospect Theory.

Why the other options are incorrect:
- a (“All of the options”) is wrong because one of the listed statements (b) is incorrect, so not all are true.
- b misstates the mapping between curvature and risk attitude (it reverses concave/convex labels and thus mischaracterizes risk behavior).
- d describes an implication (holding losers too long, selling winners early) called the disposition effect, but that is a consequence, not the fundamental statement.

Therefore the correct answer is c.

Prospect Theory suggests that...[Fill in the blank]单项选择题

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