You and Your Grandfather Both Take the Same Intelligence Test

question 125

Multiple Choice

You and your grandfather both take the same intelligence test, and you score almost 20 points higher! This is an example of the _____, and it is likely due to _____.

• A)Flynn effect; differences in education and/or life experiences
• B)Flynn effect; the increasing size of the human brain over generations
• C)Spearman effect; increasing size of the human brain over generations
• D)Spearman effect; differences in education and/or life experiences

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Definitions:

Standard Normal Random Variable

A random variable with a mean of 0 and a standard deviation of 1 under the normal distribution.

Probability

Refers to the degree of certainty associated with the occurrence of a specific outcome in a random event.

z

Often symbolizes the standard score in statistics, indicating how many standard deviations an element is from the mean.

Uniformly Distributed

A description of a distribution where all outcomes are equally likely, the probability distribution is constant.