The adult brain weighs around three pounds.Its size and weight are proportional to body size, not intelligence.Which of the following statements best describes the anatomy of the brain?
A)The brain has no influence on intelligence.
B)The three major parts of the brain each weigh about one pound.
C)The IQ of an individual increases with the increasing size of the brain.
D)The IQ of an individual decreases with the increasing weight of the brain.
E)The IQ of an individual cannot be predicted from the size of the brain.

Question

Quizplus · Accepted Answer

The size and weight of the brain are not directly linked to intelligence, as many factors contribute to IQ, including genetics, environment, and education. Therefore, it is not possible to predict an individual's intelligence solely based on the size of their brain. Choice A is incorrect as the brain does play a significant role in intelligence. Choice B is incorrect as the three major parts of the brain do not each weigh exactly one pound. Choice C and D are incorrect as the size and weight of the brain do not necessarily directly correlate with IQ.

The Adult Brain Weighs Around Three Pounds