This simplest measure of variability is the

Regarding the twin studies on intelligence, twins who develop from a single egg and have the exact same genes are known as __________ twins

a. dizygotic b. fraternal c. identical d. non-identical

A psychoanalyst would view a phobia as a symptom of:

a. some unconscious conflict c. other anxieties in the person's life b. an irrational belief d. a poorly learned behavior