summary statistics. Thus, the ambiguity premium need not be constant in this model. Mean-dispersion preferences can accommodate many existing models. We show how these correspond to different attitudes toward dispersion. Finally, we use the model to compare di erent notions of aversion to variation across

of (aversion to) dispersion that corresponds to an uncertainty premium. The key feature of these mean-dispersion preferences is that they exhibit constant absolute uncertainty aversion. This class includes many wellknown models of preferences from the literature on ambiguity. We show what properties

, and 3) CER dispersion is significantly smaller for groups than individuals in the highest-and lowest-risk lotteries. Keywords: lab experiments, risk preferences, group decisions, certainty equivalents JEL classification numbers: C91, C92, D80 * The authors gratefully acknowledge constructive feedback

by highlighting the effects of heterogeneity in consumers ’ prefer-ences within an overlapping generations economy with capital accumula-tion, endogenous labor supply and consumption in both periods. Using a mean-preserving approach to heterogeneity, we show that increasing the dispersion of propensity to save

) the degree of the harmonic series expansion, (ii) the spherical dispersion of unimodal radial functions, (iii) the choice of the knots, may to some extent be adjusted to the total number and/or the geometric arrangement of the measurement locations. However, these representations are in no way involved

. With majority voting, the median voter “individual ” and the median voter “region ” in each EU country are decisive. In this situation, the national (federal) government level for redistribution is preferred if the national ratio between median income and mean income is lower (higher) than the EU ratio

in the GNM or ANM. The mean-square fluctuations of individual residues and the cross-correlations between domain movements re-tain the same characteristics, in all approaches— although the dispersion of modes and detailed ampli-tudes of motion obtained in the ANM conform more closely with MD results

. The present research provides that kind of evidence in the case of the pub-lic expression of political preferences in the city of Barcelona, where thousands of citizens supporting the secession of Catalonia from Spain have placed a Catalan flag in their balco-nies and windows. Here we present two different

at the flowering stage, when the plant had the greatest attraction to the adults. More specifically, mean adult abundance on 26 species of major host plants and their relative standard attraction were 10.3–28.9 times and 9.3–19.5 times higher at flowering stage than during non-flowering periods, respectively

higher resolution. This means that with a given number of channels available a greater receiver spacing is preferred as long as it does not cause a spatial aliasing problem. This shows that with MASW method the general notion that more channels are always better can be misleading.