What Did Charles Spearman Discover When Studying Intelligence

question 118

Multiple Choice

What did Charles Spearman discover when studying intelligence?

• A)that the performance of individuals on a variety of intelligence tests was highly correlated.
• B)that each individual domain had associated with it specific skills.
• C)that a person's performance on tests depended both on general intelligence and domain-specific abilities.
• D)that fluid intelligence and crystallized intelligence were relatively independent.

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Definitions:

Confidence Interval

A range of values, derived from sample statistics, that is likely to contain the value of an unknown population parameter at a specified confidence level.

Population Mean

The mean value of all the elements within a population.

Sample Size

The number of observations or data points used in a study or experiment.

Confidence Level

The probability with which a statistical estimate can be expected to contain the true parameter value.