Psychological evaluation
Modern "Psychological evaluation" has been around for roughly 200 years, with roots that stem as far back as 2200 B.C. It started in China, and many psychologists throughout Europe worked to develop methods of testing into the 1900s. The first tests focused on aptitude. Eventually scientists tried to gauge mental processes in patients with brain damage, then children with special needs.
International Union of Psychological Science
Founded in 1950, IUPsyS represents around one million psychologists worldwide. It is composed of 82 National Members (national psychology organizations or coalitions of national psychology organizations, one per country), and 17 affiliate or special liaison organizations. Together, these organizations represent the large majority of organized psychology today.