A Research Article Reports the Following: "The Mean Performance Scores

question 4

Multiple Choice

A research article reports the following: "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." Based on this information, which conclusion is most accurate?

• A)People who get no sleep perform significantly worse than people who sleep a reduced amount.
• B)People who sleep a reduced amount perform significantly worse 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)This null hypothesis cannot be rejected.

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Definitions:

Social Dominance Orientation

A personality trait that predisposes an individual to prefer and support social hierarchy and the domination of perceived lower-status groups.

System Justification

The psychological process by which existing social, economic, and political arrangements are legitimized and defended by people, even at the expense of personal and group interest.

Social Dominance Theory

A theory proposing that societies are structured in hierarchical group systems, with some groups dominating or oppressing others.

Individuate

The process of developing a distinct, integrated personality or self, often associated with adolescent development and psychological differentiation from others.