I roto i te August 2005, te American Psychological Association faaite i te hiahia mo te atu psychologists ine i roto i te ahumahi<unk>mo ia PhD whakawhiwhia i roto i te kaupapa, i reira e pā ana ki 2.5 tohungatanga tohungatanga ine i tūranga. No te mea o te kore o kaitono i roto i te mara, te APA hanga he rōpū mahi ki te ako i te āhua o te hinengaro ine, me te matapae i tona heke mai.
Ko te tau 2006