The Number of People Who Claim to Be Left-Handed in the United

question 51

Multiple Choice

The number of people who claim to be left-handed in the United States and Great Britain has ____ since 1900.

• A) increased
• B) decreased
• C) remained the same
• D) become equal to rates of right-handedness

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Definitions:

Attention

The mental act of focusing attention on a particular element of the surroundings, while disregarding other aspects.

Flynn Effect

The rise in IQ scores over generations in many nations.

IQ Scores

Numerical measurements derived from standardized tests designed to assess human intelligence and cognitive abilities relative to a statistical normal distribution.

Crystallized Intelligence

The ability to use knowledge gained from past experiences, recognizing it as a form of intellectual ability that tends to improve over a person's lifespan.