Since the Invention of IQ Tests, Psychologists Have Periodically Rewritten

question 210

Multiple Choice

Since the invention of IQ tests, psychologists have periodically rewritten the tests and intentionally made the test more difficult. Why?

• A) to prevent cheating
• B) to keep the mean score from rising above 100
• C) because the tests are now being used for different purposes than they were in the past
• D) because low IQ scores have greater reliability than high scores do

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Definitions:

Respiratory System

The complex network of organs and tissues, including the lungs and airways, responsible for the exchange of oxygen and carbon dioxide between the body and the environment.

Leukocytes

White blood cells that are part of the immune system, helping to fight off infections and diseases.

Carbon Dioxide

A colorless, odorless gas produced by burning carbon and organic compounds and by respiration, essential to plant photosynthesis.

Alveoli

Tiny air sacs in the lungs where the exchange of oxygen and carbon dioxide occurs.