Which of the Following Statements Is True of Light Therapy

question 16

Multiple Choice

Which of the following statements is true of light therapy?

• A) It may help reduce seasonal affective disorder by resetting circadian rhythms.
• B) It works by increasing levels of melatonin, secreted by the pineal gland.
• C) It may decrease serotonin levels, thereby also reducing depression.
• D) It is effective only in people with mild cases of seasonal affective disorder.

---

Definitions:

Standard Deviation

A statistical measure that indicates the extent of deviation for a group as a whole, showing how much variation or dispersion exists from the average.

Cyclical Stock

A stock whose price is affected by macroeconomic or systematic changes in the overall economy.

Countercyclical Stock

Stocks that tend to move inversely to the economic cycle; they perform well when the economy is in a downturn.

Portfolio Expected Return

The portfolio expected return is the weighted average of the expected returns of the assets within a portfolio.