A Worldwide Survey of Intelligence Test Scores Showed That There

question 46

Multiple Choice

A worldwide survey of intelligence test scores showed that there were significant gains in average IQ scores in 14 nations in just one generation. These results provide support for environmental influences on IQ scores because:

• A)the amount of time involved is far too short for genetically influenced changes to have occurred.
• B)genetics have no contribution to IQ scores.
• C)evolution only occurs in nonhuman animals.
• D)the amount of time involved is far too long for genetically influenced changes to have occurred.

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Definitions:

Expected Percentage Return

The predicted return on an investment, expressed as a percentage of the initial investment.

Standard Deviation

A statistical measure that quantifies the amount of variation or dispersion of a set of data values from the mean of the dataset.

Weighted Average Return

A return measure that considers the proportional relevance of each component return in the calculation.

Budget Line

A visual depiction of every possible pair of two products that can be bought given specific income levels and product prices.