One of the Focus on Neuroscience Sections in the Text

question 329

Multiple Choice

One of the Focus on Neuroscience sections in the text describes a study in which German neuroscientists studied people who learned to juggle. One of the findings of the study was that:

• A) specific brain regions increased in size by 3 to 4 percent in the nonjugglers but did not change in the jugglers.
• B) specific brain regions increased in size by 3 to 4 percent in the jugglers but did not change in the nonjugglers.
• C) gray matter in two regions in the brains of novice jugglers decreased by 3 to 4 percent after seven days of daily practice.
• D) gray matter in two regions in the brains of seniors who learned to juggle decreased by 3 to 4 percent after seven days of daily practice.

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Definitions:

Risk-Free Asset

An investment with a guaranteed return and no risk of loss, often exemplified by government bonds of stable countries.

Risky Asset

An investment that holds some risk of losing value, as opposed to a guaranteed or risk-free asset, offering potentially higher rewards in exchange for higher risk.

Expected Return

The weighted average of the probable returns of an investment, where the weights correspond to the probability of each outcome.

Standard Deviation

A metric that quantifies the spread of a dataset around its mean, determined by taking the square root of the variance.