if unable to satisfy their basic needs or to enjoy the freedom to function people will not be in a position to demand their rights and this will deepen and reproduce poverty the available information on the surveys of households make reference mainly to lack of resources or deprivation many of which may be interpreted simultaneously as proxies for infringements of rights constraints on meeting needs or obstacles to the achievement of functionings a direct measurement of these concepts would require information which often cannot be adequately obtained through surveys or which when they can be are generally not available for example the nutritional status of the population or actual food consumption santos and others this subset of indicators can be used to explore other deprivations that can help to identify the poor such as those relating to insufficient monetary resources and those that point to deficiencies in social participation or in linkages with institutions