Certificate In Psychology (CPSY) Practice Exam

Which factor can negatively impact fetal brain development?

1. High levels of physical activity during pregnancy

2. Exposure to stress hormones

3. Regular prenatal check-ups

4. Balanced maternal diet

The correct answer is: Exposure to stress hormones

Exposure to stress hormones is indeed a significant factor that can negatively impact fetal brain development. When a pregnant individual experiences high levels of stress, the body responds by producing stress hormones, such as cortisol. Elevated levels of these hormones can cross the placental barrier and affect the developing fetus. Research has shown that excessive exposure to stress hormones may lead to changes in brain structure and function, which can result in developmental delays, cognitive impairments, and increased risks for behavioral issues later in life. In contrast, other factors presented in the choices do not have a negative impact on fetal brain development. Regular prenatal check-ups help monitor the health of both the mother and the fetus, ensuring any potential issues are addressed early on. A balanced maternal diet provides essential nutrients that are crucial for the healthy development of the fetus, supporting brain development among other physiological processes. High levels of physical activity, when done appropriately and without overexertion, can be beneficial during pregnancy, contributing to overall health and well-being for both the mother and the fetus.