In Mexico, the PROGRESA/Oportunidades/Prospera programme's impacts on private transfers have varied with programme duration. After six months, the programme crowded out private transfers to beneficiary households (Albarran and Attanasio, 2002), while other evidence shows that after 19 months the programme did not have this effect (Teruel and Davis, 2000). The programme increased the flow of private transfers to non-beneficiary households in target communities by 33 percent, compared with non-beneficiary households in control communities (Angelucci and De Giorgi, 2009, IEG, 2011).