Duba wurin da ke ƙasa sannan ka amsa tambayar daga baya a cikin harshe ɗaya kamar yadda wurin yake:  Passage: Binciken Task Force na 1996 akan Intelligence wanda kungiyar American Psychological Association ta tallafawa ya kammala cewa akwai bambance-bambance masu yawa a cikin IQ tsakanin tsere. Matsalar ƙayyade dalilan da ke haifar da wannan canjin yana da alaƙa da tambayar gudummawar "yanayi da haɓaka" ga IQ. Masana ilimin halayyar dan adam kamar Alan S. Kaufman da Nathan Brody da masana kididdiga kamar Bernie Devlin sun yi jayayya cewa babu isassun bayanai da za a kammala cewa wannan saboda tasirin kwayoyin halitta ne. Wani labarin bita da aka buga a cikin 2012 ta manyan malamai kan hankali na ɗan adam ya kammala, bayan nazarin wallafe-wallafen bincike na baya, cewa bambance-bambance na rukuni a cikin IQ an fi fahimtar su a matsayin asalin muhalli. A cikin la'akari da bambance-bambance tsakanin sakamakon gwajin ƙungiyoyin kabilanci daban-daban, mutum na iya bincika tasirin barazanar stereotype (matsalar halin da mutum yake ji yana cikin haɗarin tabbatar da mummunan ra'ayi game da ƙungiyar da ya gano tare da), da al'adu da kuma acculturation. An soki wannan lamari a matsayin almara na nuna son kai.  Tambaya: Menene ya bambanta sosai tsakanin ƙabilu?
IQ