Professor Holden Gives a Psychology Exam on the Origins of Intelligence

Professor Holden gives a psychology exam on the origins of intelligence. She gives a short answer question based on the IQ scores of a parent-child pair. In order to answer the question correctly, her students need to remember that:

A) given these variables, the correlation will be positive.
B) to say that a relationship exists, you need more than one pair of values to compare.
C) given these variables, the correlation will be uncorrelated.
D) given these variables, the correlation will be negative.