A psychologist devises a test to measure anxiety. He administers this test to over 1,000 persons and learns how many people show low, medium, or high levels of anxiety. Usually the results of such tests tend to form a(n)

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The distribution of many psychological traits, including test scores measuring things like anxiety, tends to follow a normal or bell-shaped curve. This means that most people will score around the average, with fewer individuals showing extremely low or high levels of the trait being measured.

A Psychologist Devises a Test to Measure Anxiety