_______________ is the study of psychological issues for the sake of knowledge rather than for its practical application

On the basis of twin studies and other kinship evidence, researchers estimate that about __________ of the differences in IQ among children can be traced to their genetic makeup

A) a quarter B) a third C) half D) two-thirds

The approach used in cross-cultural studies of depression, schizophrenia, and attention-deficit/hyperactivity disorder (ADHD) can be characterized as _____, that is, it assumes universally accepted definitions of abnormality and methodology

a) etic b) emic c) ethic d) eidetic