How Ambiguous Is The Structural Ambiguity

Ribosomal ambiguity made less ambiguous.

In PNAS, Fagan et al. (1) report a significant step forward in the quest to understand how the fidelity with which ribosomes translate the sequences of mRNAs into protein sequences is determined. The crystal structures discussed in this paper show that the B8 bridge between the two ribosomal subunits is critical in this regard. This work also brings into high relief a more general problem that ...

Ambiguous games: evidence for strategic ambiguity aversion.

The problem of ambiguity in games is discussed, and a class of ambiguous games is identified. A total of 195 participants played strategic-form games of various sizes with unidentified co-players. In each case, they first chose between a known-risk game involving a co-player indifferent between strategies and an equivalent ambiguous game involving one of several co-player types, each with a dif...

How is the Mother Tongue Acquired

How Much Ambiguity Aversion? Finding Indifferences between Ellsberg’s Risky and Ambiguous Bets

Experimental results on the Ellsberg paradox typically reveal behavior that is commonly interpreted as ambiguity aversion. The experiments reported in the current paper find the objective probabilities for drawing a red ball that make subjects indifferent between various risky and uncertain Ellsberg bets. They allow us to examine the predictive power of alternative principles of choice under un...

Definitions of Ambiguous Events and the Smooth Ambiguity Model

We examine a variety of preference-based definitions of ambiguous events in the context of the smooth ambiguity model. We first consider the definition proposed in Klibanoff et al (2005) based on the classic Ellsberg two-urn paradox (Ellsberg (1961)), and show that it satisfies several desirable properties. We then compare this definition with those of Nehring (1999), Epstein and Zhang (2001), ...