If a Research Article Reports That "The Mean Performance Scores

question 71

Multiple Choice

If a research article reports that "The mean performance scores for the Normal Sleep,Reduced Sleep,and No Sleep groups were 18.0,16.6,and 15.6,respectively,F (2,36) = 2.95,p < .05," the most accurate conclusion is that

• A)people who get no sleep perform significantly worse than people who sleep a reduced amount.
• B)people who get no sleep perform significantly better than people who sleep a normal amount.
• C)the three groups do not all come from populations with the same mean,although it is not clear which population means are different.
• D)conclusions about the relationship between amount of sleep and performance cannot be drawn from these results.

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Definitions:

Peripheral Sexual Characteristics

Traits that emerge during puberty that are not directly involved in reproduction but distinguish between the sexes, such as facial hair in males and breast development in females.

Neurons

Neurons are the primary cells of the nervous system, responsible for transmitting information through electrical and chemical signals.

Gyri

The ridges or convolutions that make up the surface of the brain, increasing its surface area and allowing for greater cognitive processing power.

Sulci

Grooves or furrows on the surface of the brain, which along with gyri (ridges), increase the surface area of the cerebral cortex.