A donation may have ambiguous costs or ambiguous benefits. Behavior in a laboratory experiment suggests that … individuals use this ambiguity strategically as a moral wiggle room to act less generously without feeling guilty. Such excuse … excuse-driven behavior is comparable under ambiguity and under risk. Individuals exploit any type of uncertainty as an excuse …

be stable over time. In this paper, we analyze the stability of ambiguity preferences experimentally. We repeatedly … elicit ambiguity attitudes towards multiple 3-color Ellsberg urns over a period of two months. In our data, 57% of the …

This paper's objective is to design a laboratory experiment to explore the effect of ambiguity on a subject's search … faced with ambiguity over wage distributions. …

, with the game ranging from a zero-sum one to a coordination game. Meanwhile, the predictions by ambiguity aversion models … similar to the zero-sum game, suggesting that subjects view the standard Ellsberg experiment as a game against the …

, the nature, causes and implications of the phenomenon for economic theory remain unclear. We present a new experiment … to information differences (sampling bias), to a feature of preferences (ambiguity sensitivity) or to aspects of …

I experimentally examine whether feedback about others' choices provides an anchor for decision-making under ambiguity … relative ambiguity attitude (compared to the peer's) significantly matters for shifts in individual attitudes, and that … dynamics considerably differ between gain and loss domains. For gains, learning to be comparably ambiguity averse increases the …

experiment and find that subjects act more often in line with consequentialism than with dynamic consistency. …

nature and implications for economic theory remain unclear, for reasons we explain. We present a new experiment which … information differences (sampling bias), to a feature of preferences (ambiguity sensitivity) or to aspects of cognition …

, recent theoretical studies point out the possibility of its failure under ambiguity. We propose a modification of RIS, named … independent RIS (I-RIS), to improve its reliability. We conducted an experiment to evaluate the performances of the standard RIS … reversal-of-order axiom, a majority of ambiguity averse and seeking participants are. This implies that participants with …

This paper provides a systematic analysis of individual attitudes towards ambiguity, based on laboratory experiments …. The design of the analysis allows to capture individual behavior across various levels of ambiguity, ranging from low to … high. Attitudes towards risk and attitudes towards ambiguity are disentangled, providing pure measures of ambiguity …