We analyze the effects of income concentration and income dispersion on market demand and its elasticity. We show that, following an increase in income concentration towards the middle (measured by variations in mean preservingspread), the increase in demand faced by firms which serve at the...

Esteban (1986) introduced the notion of income share elasticity as a function pi which can describe the size distribution of income. On the other hand, indices of first or second order stochastic dominance are widely used to describe shifts in income distribution, to which inequality measures...