Malnutrition is a very serious problem in developing countries. According to Onis et al. (2000) about one third of less than five years old children are stunted in growth. There is evidence that inadequate nutrition in childhood affects long term physical development (Martorell and Habicht, 1986, Barker, 1990), as well as the development of cognitive skills (Brown and Pollitt, 1996 and Balazs et al 1986) and educational attainment (Behrman, 1996, Strauss and Thomas 1995). This in turn affects productivity later in life (Dasgupta 1993, Strauss and Thomas 1998, and Schultz 1999). The main aim of this study is modelling.
