Steve Commins is a director of Public World, a lecturer at the University of California Los Angeles, and a member of the team that wrote the 2015 World Bank World Development Report Mind, Behavior and Society.  Whose biases count is a stake reminder of the challenge international development professionals face in working in disadvantaged communities where despite their experience skills, tools, and grass roots development approaches there is a disconnect from the day to day realities and values of people they serve. The inability to build in challenge as a way of improving practice means well-intentioned approaches to development can go astray, Commins argues. The report calls for ‘psychology and social conscience policy-making’ rather than economic models that fail to challenge bias, attitudes, and the mindsets of development professionals.