The IDA is evaluated by the Bank's Independent Evaluation Group. In 2009, the group identified weaknesses in the set of controls used to protect against fraud and corruption in projects supported by IDA lending. In 2011, the group recommended the Bank provide recognition and incentives to staff and management for implementing activities which implement the Paris Declaration on Aid Effectiveness principles of harmonization and alignment, promote greater use of sector-wide approaches to coordination, and explain the reasons why when a country's financial management system is not used so that the client country may address those shortcomings. It also recommended that the Bank collaborate with development partners to strengthen country-level leadership of development assistance coordination by offering greater financial and technical support. Development economists, such as William Easterly, have conducted research which ranked the IDA as featuring the most transparency and best practices among donors of development aid.