Psychology has become a global profession. Professionals are now readily able to practice in geographic areas far from where they were trained. In practice, psychology has a social contract with the public to promote human and societal welfare, all the while responsible for the constant upkeep of systems that promote, maintain, and demand quality from health care professionals. In Global Promise editors Judy H. Hall and Elizabeth M. Altmaier examine the tools needed for evaluating the crucial components of quality assurance - education, training, accreditation and designation, licensing and credentialing, ethics, mobility, and continuing professional development - from an international perspective, with a specific focus on practices in the US, Canada, the European Union, Latin America, Australia, and The Netherlands. An international team of contributors synthesizes the progress made in implementing quality assurance mechanisms across the globe and offers diverse perspectives as to how the wider international community can promote quality and mobility.