The strongest effects on child labour are achieved when the transfer to the head of household is higher, thus reducing the opportunity cost of sending children to work (Hoddinott et al., On the other hand, the same study shows a reduction of school attendance rates, and a rise in the number of hours worked within the household was found for 6-10 year-old girls (Hoddinott et al., Overall, considering the programme jointly with other transfers, the authors find no effects on child school attendance and substantial increases in hours worked by girls. Slightly different results are reported by Woldehanna (2009), whose empirical analysis based on the propensity score matching on the Young Lives survey data, shows that the public work component of PSNP had an overall positive impact on the total hours children spent working, reducing especially work within the household.