Maternal hormones:
A) have little effect on a fetus's development because the fetus is isolated from the mother's blood supply
B) can affect physical development, such as the time at which a child will walk, but not mental variables, such as IQ
C) can have important effects on variables such as intellectual development
D) have an effect on a fetus's development only in the first trimester

Question

Quizplus · Accepted Answer

Maternal hormones can have important effects on variables such as intellectual development of the fetus. Studies have shown that exposure to high levels of stress hormones in utero can impair cognitive development and lead to behavioral problems later on in life. Other studies have shown that exposure to thyroid hormones during pregnancy is important for normal brain development in the fetus.

Maternal Hormones