This article shows that for a citizen with reciprocal preferences, voting can be a rational act. Even in elections with many voters, when the probability of being the pivotal voter is close to zero, the utility generated by strong reciprocal sentiments can compensate the material costs of...

Para algunos, la distribución del ingreso es el primer ejemplo de una ley de potencia, reglaempírica según la cual una variable aleatoria alcanza valores altos con una probabilidadbaja y valores bajos con una alta probabilidad. En este artículo se verifica si la distribucióndel ingreso de...

This article characterises the commercial airline transport market in Colombia and then develops a reputation model describing the relationship between airlines and consumers. Grossman and Hart's pioneering work (1986) is thus used for modelling horizontal integration between firms and is then...