A Vox article on the relative pros and cons of the ultra poor graduation model cites two IPA studies: one in Niger on the impact of providing women with both financial and psychosocial support; and a large-scale study of graduation programs in Ethiopia, Ghana, Honduras, India, Pakistan, and Peru. Reflecting on the long-term impact of these types of studies, Chris Blattman notes: “In many cash transfer studies, effects dissipate over time not because the initial impact wasn’t large, but because the control group caught up."