East Asian Indians ARE caucasians.
(It's a small part of why we speak a language in the Indo-European language group)
I probably should've said 'European Caucasians' rather than just 'Caucasians'. European Caucasians are the ones responsible for I.Q. tests in the first place.
Actually, some Indians are Caucasian, but there are some who look more mongoloid and some look very black African.
Most Indians are mixed though in the north, the indo-european features are more common. In Bombay, which has a huge population of south Indians, the differences between north and south Indians are quite striking.
Indians, Pakistanis and Persians are all Caucasian people, but all have mixed genes in them to varying degrees. Also all three are culturally different from one another, though Pakistanis share a lot more in common with north Indians (except religion, of course).