In 2011 Venkatesh was the subject of an investigation on spending at ISERP .
In 2009 Venkatesh became director of Columbia University 's Institute for Social and Economic Research and Policy , or ISERP .
In 2011 Venkatesh was the subject of an investigation on spending at ISERP .
In 2009 Venkatesh became director of Columbia University 's Institute for Social and Economic Research and Policy , or ISERP .