On what basis did Raymond Cattell determine basic human traits?

Some people have nearsightedness (myopia) or farsightedness (hyperopia) because the distance between their _____ and their _____ is either too short or too long

a) cornea; lens b) iris; pupil c) rods; cones d) lens; retina

Yami comes from a traditional culture. In order to become a man and, specifically, be allowed to marry, he has to prove that he can:

a. kill, in order to protect his family. b. provide financially for the people in his village. c. demonstrate an act of kindness toward another member of his family or tribe. d. show that he can perform sexually in some way.