In Late Adulthood the Brain Shrinks and Total Brain Mass

question 224

Multiple Choice

In late adulthood the brain shrinks and total brain mass declines,so that by age 80,most people have lost ____% of their peak brain mass.

• A)5-10%
• B)15-25%
• C)25-45%
• D)45-60%

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Definitions:

Employed

The state of having paid work or being engaged in an activity or enterprise as a means of earning an income.

Labor-Force Participation Rate

The proportion of the adult population that is either employed or actively looking for employment.

Marginally Attached Workers

Individuals not currently in the labor force who have looked for work within the last year but not in the last four weeks, often due to temporary barriers.

Labor-Force Participation Rate

The Labor-Force Participation Rate is the percentage of the working-age population that is part of the labor force, either employed or actively looking for work.