A Study of Many Countries Finds a Strong Positive Correlation

question 24

Multiple Choice

A study of many countries finds a strong positive correlation between the life expectancy in a country and the number of Facebook users in the country. This means that:

• A) Facebook use is a major contributing cause of longer life.
• B) life expectancy could be significantly increased by having more people start Facebook accounts.
• C) in countries where life expectancy is high, the number of Facebook accounts tends to be low.
• D) in countries where the number of Facebook accounts is low, life expectancy tends to be high.
• E) None of the answer choices are correct.

---

Definitions:

Neurochemicals

Chemicals that facilitate communication between neurons in the nervous system, including neurotransmitters and neuromodulators.

Blood-Brain Barrier

A selective barrier that prevents certain substances in the blood from entering the brain, protecting it from potentially harmful chemicals while allowing essential nutrients to pass through.

Neuropsychological Illness

Disorders that arise from changes in the functioning of the brain, affecting cognitive, emotional, and behavioral functioning.

Psychoactive Drugs

Chemical substances that affect the brain function, leading to alterations in perception, mood, consciousness, cognition, and behavior.