Ambiguity Attitudes about Investments: Evidence from the Field

Working Paper: NBER ID: w25561

Authors: Kanin Anantanasuwong; Roy Kouwenberg; Olivia S. Mitchell; Kim Peijnenberg

Abstract: Using an incentivized survey and a representative sample of investors, we elicit ambiguity attitudes toward a familiar company stock, a local stock index, a foreign stock index, and a crypto currency. We separately estimate ambiguity aversion (ambiguity preferences) and perceived ambiguity levels (perceptions about ambiguity), while controlling for unknown likelihood beliefs. We show that ambiguity aversion is highly correlated across different assets and can be summarized by a single underlying factor. By contrast, individuals’ perceived ambiguity levels differ depending on the type of asset and cannot be summarized by a single underlying factor. Perceived ambiguity is mitigated by financial literacy and education, while the preference component is correlated with risk aversion. Perceived ambiguity proves to be related to actual investment choices, validating our measure. Finally, our results imply that policies enhancing financial literacy and knowledge of financial markets can help stimulate equity market participation and reduce inequality, as these reduce peoples’ perceived levels of ambiguity about financial assets.

Keywords: ambiguity aversion; financial literacy; investment choices; perceived ambiguity

JEL Codes: C93; D14; D81


Causal Claims Network Graph

Edges that are evidenced by causal inference methods are in orange, and the rest are in light blue.


Causal Claims

CauseEffect
ambiguity aversion (D81)ambiguity aversion across different assets (D81)
financial literacy (G53)perceived ambiguity (D80)
perceived ambiguity (D80)likelihood of investing in familiar stock and bitcoin (G41)
ambiguity aversion (D81)financial literacy (G53)

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